Chris

"Sir, there's another mysterious letter," Mark, my assistant, said.

"Close the door." Mark hurriedly closed the door to my office and returned to stand beside me.

Over the past two weeks, I have received two mysterious letters. I do not know who sent them. At first, I ignored them, but the sender didn't give up and seemed to push me to find out the truth behind the clues they had left in the letters.

The letter stated that Lisa, my wife, was having an affair with many men. However, I struggled to believe it because I knew her daily schedule. Besides, my mother, Anne, lived with us. Our house was always busy, with Alice Walker, our teenage daughter, and several maids, gardeners, and even security guards. So, it is very unlikely that Lisa is having an affair.

However, the contents of the second letter shook my confidence. The sender asked me to go to a supermarket where my wife usually shops for groceries. However, the sender asked me to stay in the car and watch my wife. After that, the sender also asked me to call my wife while she was shopping.

It seemed like a simple request, but it shook my confidence.

"Do you believe the letter's contents, sir?" Mark asked.

"What do you think I should do?" To be honest, even though my confidence was shaken, I believed in Lisa. We had been married for thirteen years. During that time, she had been a good wife and mother.

When my mother lived with us, she was also a good daughter-in-law. My mother always praised her in front of me and in front of her friends.

Besides, I never restricted her. Since we got married, I gave her freedom, and I never limited her spending because she was quite thrifty and good at managing all the finances in our house.

"Sir, there's something I want to tell you. I was hesitant before, whether I should say it or not," Mark replied.

I turned and looked at Mark, who was acting unusually. His face looked troubled. "What is it? Tell me."

"I have heard rumors about an affair between a wealthy business owner's wife and several men. And this woman is quite famous among the bad boys. Many men line up to sleep with her, even if it's just for a short time. Even photos of her naked back are circulating in a special group for cheaters. This sounds crazy, and I don't expect you to believe me. However, no one knows the woman's identity except those who have slept with her. Those who have slept with her will never reveal her identity," Mark replied. His face looked nervous, and his fingers fidgeted.

"Did you join that group? Can you show me the photo of the woman's back?" At that moment, I felt uneasy. A little fear crept into my heart. I wasn't ready to face the truth.

Mark immediately took his phone out of his pants pocket. After searching for a moment, he finally showed me the group. My eyes widened and I could hardly believe what I was seeing.

The group was quite active. All the members were active except Mark. Then, Mark showed me the gallery containing photos of the woman's back, who was the darling of the rich and naughty men.

At first, I didn't recognize the photo, but when I enlarged it, my heart felt like it was going to jump out of my chest. I recognized a small mole under the woman's neck.

At first glance, the photo was just a photo of a woman's naked upper back. However, when I looked more closely, she was completely naked. I saw a thin white cloth only covered her legs.

Instantly, my body felt weak. The mole couldn't be used as direct evidence to judge the woman who had been with me for thirteen years. There might be many women out there with the same shape and location of a mole as Lisa's.

"Mark."

"Yes, sir."

"Why did you join this group? Are you also part of these naughty men?"

Mark's eyes widened. He shook his head several times. "N-no, sir. I joined the group at the request of a friend. It's a long story."

"Okay."

"What's your plan?"

This curiosity was killing me. I had to confirm with my own eyes all the clues written in the secret letter.

I hurriedly stood up and got ready to leave. "Tell Jenna that if anyone looks for me, just say I'm busy with clients. Now come with me to the supermarket as written in that mysterious letter. Cancel today's work plans. Change everything to tomorrow."

Mark hurriedly conveyed my message to Jenna, my secretary. After that, we rushed to the supermarket in the city center. It was 2 p.m. on Wednesday. Usually, Lisa went shopping every Wednesday at 2:30 p.m. alone without a driver. In half an hour, I would know the truth behind the clues written in the mysterious letter.

Upon arriving at the supermarket parking lot, Mark saw Lisa's car parked near the online pickup spot. Finally, we parked near to Lisa's car. Mark deliberately borrowed Jenna's car to avoid suspicion.

From inside the car, I saw Lisa's car was empty. Maybe she was inside the supermarket. But the letter said Lisa was cheating at the supermarket. How could that be?

I called Lisa right away. After two rings, she answered the call. There was nothing unusual about her tone, and the background noise sounded like the usual sounds of a supermarket.

Could the mysterious letter just be a prank? But I waited and monitor things. After ending the call with Lisa, Mark and I waited in the car.

Fifteen minutes later, a black sedan pulled up and stopped right in front of Lisa's car. Lisa got out of the car and got into her car. However, she didn't leave the supermarket right away. Instead, she dried her hair and sprayed perfume on her neck and body.

Why Lisa? Why?

"Did you see the figure next to Lisa just now?" I asked Mark.

Mark was just as shocked as I was. Emotions slowly crept into my heart, even though my heart felt like it was being sliced by a knife bit by bit. The trust, love, and everything I had given her had been misused.

My life turned upside down in an instant. The image of a happy family that had been in my mind all this time was shattered in an instant.

"Sorry, sir. I didn't see it. But it was a man," Mark stammered.

"Do you remember the license plate number?" Mark nodded.

"Find out who owns that car."

Chris

Fifteen minutes later, Lisa left. Could she have gone shopping first before finally leaving with another man? What happened? I was very curious and angry. I didn't expect her to take advantage of such a small opportunity to be with her lover.

"Sir, are you okay?"

"No," I replied flatly.

"What we saw today is only part of it. My suggestion is that we follow Mrs. Lisa from early in the morning. That way, you can confirm her activities for yourself, and if she is indeed having an affair, she should return to meet the man. It's just a suggestion," Mark said.

Mark was right. I will try to follow her all day tomorrow.

"Okay, we'll follow your suggestion tomorrow. One more thing, find out who sent the mysterious letter."

However, Mark's eyes widened and his brow furrowed. "What's wrong?" I asked.

"The letter was just left there on the park bench. Unfortunately, the CCTV cameras around the park are still under maintenance, so we can't confirm who left the letter there. But I'll keep investigating."

Not long after, Lisa left. I asked Mark to follow her. It turned out she went back home.

From everything I witnessed that morning, what if Lisa was just meeting her friend? Before marrying her, she had many friends compared to me. Spraying perfume on her body inside the car was normal. But drying her hair inside the car wasn't.

After making sure Lisa went inside the house, Mark and I returned to the office. That night, when I got home, I acted normally as if I knew nothing. I saw Lisa acting normally. She was active and efficient in taking care of the household chores. That's why my mother liked her so much.

Two hours before midnight, when everyone had gone to their bedrooms, I left my bedroom on the pretext that I had something to do because I had to email that night. Without suspicion, Lisa allowed me to go and asked me to hurry back.

To avoid suspicion, I deliberately turned on the lights in the study and my laptop. Then I hurried to the laundry room. Earlier that day at the supermarket, I had deliberately asked the housekeeper not to wash all the clothes because I had some new clothes to give her the next day. The housekeeper understood and postponed washing our clothes that day.

I turned on the laundry room light, and near the washing machine, I saw a large basket of clothes ready to be washed and a small basket next to it containing underwear ready to be washed. Among the pile of underwear, I saw Lisa's pink underwear.

I had seen her wearing those panties that morning. When I looked more closely, among the pile of bras, I found Lisa's black panties. I took both panties and saw that the middle part was wet and sticky with white fluid.

I realized what I did that night might disgust, but I did it solely to confirm the doubts in my heart.

When I brought the wet and sticky part close to my nose, I smelled nothing unusual at all. Could that mysterious letter have influenced me? But the oddness in the car still puzzled me.

Suddenly, I heard the bedroom door open. I quickly put the underwear in the basket, turned off the laundry room light, and rushed to the kitchen to pretend to pour tea.

Luckily, I did everything just in time. Just as I was pouring tea into the cup, Lisa entered the kitchen and opened the refrigerator.

"I thought you were in the study," she said.

"Suddenly, I wanted a cup of tea," I replied while finishing the tea in the cup. If only she had caught me in the laundry room holding her underwear, I didn't know what would have happened, because I had never entered the laundry room at all. Lisa and the head maid handled all household chores.

Suddenly, Lisa hugged me from behind and rested her head on my back. "Chris, have you finished your work?"

"Almost. What's wrong?" I stroked her hand, but I stayed in the same position.

"I can't sleep without you. I'll wait in the bedroom. Tonight, I'll sleep with no clothes on," she whispered. Then, her hand touched my sensitive area.

Ah. As a man, of course, I was aroused. Lisa was indeed skilled at teasing and arousing my libido. Throughout our thirteen years of marriage, she had never failed to seduce me. And as far as I knew, our sex life was fine. There were no issues. So, if she was indeed cheating and sleeping with many men, what was her reason?

Lisa walked away from the kitchen with a seductive look. That night, she invited me to have sex with her. However, even though my desire was rising, the odd incident at the supermarket made my desire fade. But if I refused, she would become suspicious.

I played along with her game.

After turning off the laptop and the office lights, I hurried into the bedroom, and Lisa was already lying on the bed, naked. And she always tempted my resolve.

At first, she seemed like a goddess descended from heaven to me. Her beautiful body and sexy voice always enchanted me. But, after tomorrow, if I find out the truth, I'm sure my view of her will change completely.

Under the moonlight that shone brightly that night, we enjoyed an extraordinary union. Lisa's agile movements on top of me made me feel like I was flying high. I closed my eyes and let Lisa take control of my body.

"Ah." The moans that escaped our lips echoed throughout the room.

It felt truly extraordinary and indescribable, so much so that small moans escaped my lips and joined Lisa's moans as she moved actively on top of me.

I held her hands, occasionally squeezing her breasts, which were the perfect size for me. My wife's body was like an addiction to me. I always adored her.

The union in the middle of the night, accompanied by passionate kisses, finally ended when we both reached the peak of pleasure. Lisa's body lay limp on top of mine, and I could hear her labored breathing.

That night, we slept in each other's arms until the next morning.

The next morning, as scheduled, after breakfast, Lisa would take Alice to school. Usually, I would work briefly in my study room before heading to the office. But that morning, I left the house directly because Mark was already waiting for me at a certain place.

We were ready to carry out the mission.

Chris

I saw Lisa's car leaving through the gate. I hurried away to see Mark, who was waiting for me at a coffee shop near to my house.

Mom was confused because I rarely went straight to the office. I told her I had a lot of work to do that morning. After that, she was quiet and didn't ask me anything else.

When I arrived at the coffee shop, I saw Mark and Jenna waiting. Then, we immediately switched cars. I borrowed Jenna's car for one day. Jenna returned to the office and drove my car, while Mark and I drove Jenna's car.

Because time was running out, Mark and I hurried to Alice's school. My heart was beating quite fast, and I was worried that we would lose track of Lisa.

"That's Mrs. Lisa's car," Mark yelled. I looked towards the school parking lot and saw that Lisa's car was still parked there. When I looked for her among the crowd of parents, I saw her talking to a woman.

We parked near to there and didn't forget to wear hats and sunglasses as a disguise, even though Jenna said that the car windows were safe because the inside of the car couldn't be seen clearly from the outside. However, to feel safer, we decided to still use a disguise.

Fifteen minutes later, Lisa got into her car and drove to the shopping area and cafes. It was half past seven in the morning, and Lisa usually went to a coffee shop to buy a cup of coffee, then went to a cheese cake shop to buy cheese cake.

As far as I knew, that was her schedule.

Sure enough, her car stopped right in front of the coffee shop. A few moments later, her car stopped again in front of the cheesecake shop. Everything was the same as the schedule she had written for me a long time ago.

Doubt and guilt crept into my heart. It never crossed my mind that one day I would doubt my wife's loyalty. But, to prove everything, I had to find out.

"Mark, can the CCTV on the office terrace be finished today?"

"We'll try, sir," Mark replied.

"Maybe you can work with the police to find out the identity of the person who sent me the secret letter after the CCTV captures his or her face. But do everything quietly, so there's no commotion at the office. And I don't want Lisa to hear about this."

"Okay, Sir. Understood."

From the cheesecake shop, Lisa's car stopped at a cafe that was usually a popular breakfast spot for people who didn't have time to cook breakfast. From inside the car, I saw her meet a woman, but I had never seen her face at any of the parties we had hosted. Her face looked unfamiliar to me.

Lisa was there for about an hour. She looked cheerful when talking to the woman. Before getting into the car, I saw her staring at and typing something on her cell phone for quite a long time, about half an hour. After that, she parted with her friend and got back into the car.

Next, Lisa visited her favorite boutique in the mall. Mark parked the car near to Lisa's car. I saw her get out of the car and enter the mall.

"Sir, should I follow her into the mall?" Mark asked as he got out of the car. He deliberately stuck a fake mustache under his nose, then put on black-rimmed glasses and a hat.

"You look different. Okay, follow her. Take some photos. The boutique's name is Miss Selfridge," I replied.

Mark hurried out of the car and entered the mall. Meanwhile, I stayed in the car, checking some documents.

An hour and a half later, Mark sent a quick message to my cell phone. He told me that Lisa was walking towards the parking lot. Not long after, I saw Lisa get out of the elevator, and then get into her car while carrying two shopping bags.

After Lisa's car drove away, Mark got into the car, then hurriedly drove after Lisa.

From the mall, he went to the supermarket. In the schedule she wrote for me, she said she would go to the supermarket every day because she preferred to eat fresh vegetables and fruits. I didn't mind when she said that because I thought her reason was reasonable. But what if the mysterious letter was genuine? Then Lisa had indeed arranged everything to look normal.

While waiting in line to enter the supermarket parking lot, Mark said, "Sir, Mrs. Lisa went into the boutique and stayed there for quite a while looking at some clothes. Then, she went to the jewelry store and stayed there for quite a while. It looked like she bought a pair of diamond earrings. After that, she got into the elevator to go to the parking lot."

"Okay, Mark. Thank you." I asked Mark to park in a more strategic area to observe Lisa's movements.

Not long after Lisa parked her car, a red luxury car stopped right in front of her car. Lisa got out of her car and entered the red luxury car.

Yesterday she got out of a black sedan, now she's getting into a red luxury car. Who are they?

I was stunned and lost in my thoughts until Mark's voice brought me back to reality.

"Sir, are you okay?" I nodded.

Mark drove out of the supermarket parking lot, following the luxury car. Strangely, the car headed toward the famous hotel complex in Riverford. However, I tried to think positively. Maybe they were just passing through the area on purpose.

I sat quietly in the middle passenger seat, feeling a little confused and hurt. It felt like needles were piercing my heart, and it hurt so much.

If I found the truth behind all the riddles written in that mysterious letter, what would I do? If I divorced Lisa, Alice would be affected. The happy marriage we had built over the past dozen years would be destroyed in an instant, and everything would change suddenly.

But I couldn't tolerate infidelity and betrayal because if it was proven true and all the truth came out, then Lisa had indeed stabbed me in the back.

"Sir, they stopped in front of the Royal Hotel." It turned out that my guess was right.

I saw Lisa get out of the car with a man. Even worse, the man was hugging my wife's waist, and they entered the hotel with cheerful smiles on their faces.