My Husband Took His Female Colleague to My Inherited Lake House for ‘Business Trips’ — But He Had No Idea I’d Already Installed Cameras

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I never imagined I’d become the kind of woman who installs hidden cameras in her own home. But when my husband’s “business trips” started sounding more like excuses, and an old neighbor called me with unsettling questions, something in my gut told me there was far more to Luke’s absences than just spreadsheets and client meetings.

For seven years, I thought Luke and I had the kind of marriage that everyone secretly envied. It was like we moved through life as a perfectly synchronized couple—supporting each other’s careers, planning weekend getaways, and daydreaming about the family we’d start “someday soon.”

I was so wrapped up in the performance of our perfect life that I missed every warning sign.

I work as a senior editor at a publishing house in Chicago, and the past year had been nothing short of chaos. My team was working on three major releases, and I was buried under manuscripts, author meetings, and marketing plans. Most nights, I’d collapse into bed around midnight, my mind still spinning with tomorrow’s deadlines. I remember how Luke would smile at me as I stumbled to bed, his voice soft, saying something like, “You’re working so hard, babe.”

Looking back now, I see how convenient that distraction was for him.

Two years ago, I inherited a little lake house from my grandmother in northern Wisconsin. It’s nestled between tall pines, right at the end of a barely paved road. The house is old, cozy, and full of charm. It’s a place I spent every summer growing up—catching fireflies, baking peach cobbler with my grandma, and reading on the dock until my skin turned golden under the sun.

After Grandma passed, the house became my safe place. I made it clear to Luke that the lake house was mine. He could visit, but it was my sanctuary. We stayed there one weekend to paint the bathroom and clean out the attic, but that was it. He never had a key, never went alone. Or so I thought.

For the past six months, Luke’s been going on what he calls “business trips.” He said he was traveling more due to a “client pipeline expansion.” I didn’t question it much—I was too busy with work to think about it.

He’d leave and say he’d be back in a few days, leaving me to enjoy quiet evenings with my dog and expensive takeout. Life seemed fine—until one morning when everything changed.

I was rushing to get ready for work, my hair still wet from the shower, when my phone rang. The caller ID showed a Wisconsin area code.

“Hello?” I answered, balancing the phone between my ear and shoulder while hunting for my missing shoe.

“Sandra? It’s Mr. Jensen,” came the familiar voice from the other end. Mr. Jensen, my grandmother’s old neighbor, who still walked the lake every morning at sunrise with his dog.

“Hey, Mr. J! How are you?” I found my shoe under the bed and slipped it on.

“I’m good, sweetheart. Just wanted to check in—everything okay with the house?”

I paused. “Of course. Why wouldn’t it be?”

“I saw someone up there last weekend. Tall guy. He was unlocking the door like he owned the place. Didn’t recognize him.”

My stomach twisted.

“Oh,” I said, trying to sound casual, though my heart was racing. “Probably just a maintenance worker.”

“He didn’t look like he was fixing anything,” he grunted. “He had a nice car, carrying grocery bags… Just thought I’d mention it.”

After we hung up, I stood frozen in my bedroom, the words hanging in the air. Luke had been in Philadelphia last weekend. Or so I thought. Had he lied to me?

That night, I didn’t confront him. Something inside me told me to wait. But I couldn’t shake the feeling that something wasn’t right.

The next weekend, Luke left for another “conference.” As soon as his car disappeared down the street, I packed a bag, called in sick to work, and drove the four hours up to the lake house.

Everything seemed normal at first. The porch was clean, and the windows were shut tight. But when I unlocked the front door, my hands were shaking with nerves.

Inside, the house smelled different—not musty like it usually did when it had been empty, but fresh, like someone had been airing it out.

I moved slowly through each room, and small details started to crawl under my skin like tiny bugs.

A wine glass sat in the sink, with a faint smear of coral lipstick on the rim.

A throw blanket draped over the couch—a blanket I didn’t recognize.

The bed was made neatly, with hospital corners—a style I never used.

The pillows were arranged in a way that wasn’t my usual messy tucking.

In the bathroom, I found a long blonde hair caught in the drain. It wasn’t mine. I have shoulder-length dark brown hair.

The trash bin held two takeout containers from a nearby restaurant, along with a receipt for dinner for two. The dishes listed on it were Luke’s favorites.

I sank into my grandmother’s rocking chair as the truth hit me like a punch. My hands were shaking as I imagined Luke with another woman.

I couldn’t ignore it anymore. I needed proof.

That afternoon, I drove to the nearest electronics store and bought a security system with three cameras that I could connect to my phone. I set them up carefully—one by the front door, one at the back entrance, and the last one hidden in a vintage bookend on the living room shelf.

“Just in case of thieves,” I muttered aloud, though deep down, I knew exactly what I was looking for.

That night, I drove back home, the emptiness in my chest growing heavier. Two days later, when Luke returned from his “conference,” I greeted him with a smile and asked about his trip.

“It was great,” he said as he unpacked his suitcase. “Client meetings went well.”

I nodded and asked what restaurants he tried.

“Nothing special,” he shrugged. “Mostly room service. I was swamped with work.”

Every word felt like a needle piercing my skin.

The following Thursday, Luke announced another trip.

“Minnesota this time,” he said. “I’ll be back Sunday night.”

I smiled sweetly. “You’re working so hard lately. I’m proud of you.”

Friday morning, I was reviewing manuscript edits when my phone buzzed.

Motion alert: Front door. Entry detected.

My heart raced as I opened the live feed.

There was Luke, unlocking the front door of my lake house. And behind him? A slim woman with long blonde hair and a designer handbag. She giggled as he held the door open.

“Welcome back to paradise, babe,” I heard him say.

I watched, frozen in place, as they moved through my sanctuary like it belonged to them.

I didn’t cry—not a single tear. Instead, I sat there, calm and resolute, watching them laugh and settle into my lake house.

After a moment, I closed the app and knew what I had to do.

For the next week, I kept up the charade. When Luke came home, I asked about his “work trip” and listened to his lies about corporate dinners and presentation disasters.

Finally, when he mentioned another trip coming up, I saw my opportunity.

“You know what?” I said casually over breakfast. “I think I’ll come with you this time.”

His face drained of color. “What? No, honey, it’ll be boring. Just meetings all day.”

I smiled sweetly. “Actually, I was thinking… instead of your boring work trip, what if we took a long weekend at the lake house? Just us. No phones. No distractions.”

He hesitated, fumbling with his coffee mug. “I can’t just cancel—”

“I already spoke to Tim at your office,” I lied smoothly. “He said the Minnesota client rescheduled. You’re free until Tuesday.”

Checkmate.

“You… talked to Tim?” Luke’s voice cracked.

“I wanted to surprise you with this getaway,” I said, reaching for his hand. “We’ve both been so busy. I miss you.”

What choice did he have? He agreed.

We drove up that Friday morning. He played his usual playlist, pretending nothing was wrong, while I held his hand at red lights, talking about how excited I was for our romantic weekend.

At the lake house, I made lunch while Luke unpacked, looking more nervous by the minute. I could almost see him wondering if his mistress had left any evidence behind.

“I’ve got a surprise for you,” I said, a smirk tugging at the corner of my lips.

He perked up. “What kind of surprise?”

“I put together a little slideshow,” I said sweetly. “Since you’ve been enjoying the lake house so much lately.”

His face froze. “What do you mean?”

Without a word, I turned on the TV and hit play.

The footage rolled. Luke, unlocking the front door. His mistress, giggling behind him. They stepped inside, their voices too clear to ignore.

I’ll never forget the look on his face.

“Sandra, I can explain—”

“Save it,” I said calmly. “What’s there to explain? That you stole the keys to my property? That you’ve been lying for months? That you brought another woman to the one place that matters most to me?”

“You spied on me?!” he shouted, his desperation turning to anger. “That’s insane! How could you even do that?”

Gaslighting. Classic cheater behavior.

“What’s insane is thinking you wouldn’t get caught,” I replied. “What’s insane is blaming me for spying on you when you know you’re the one who messed up.”

I handed him an envelope filled with divorce papers, already signed.

“I’ve been talking to my lawyer for weeks,” I said coldly. “You have until Monday to sign. Or the footage goes to everyone. I mean everyone. Your boss—who thinks you’ve been working so hard. And her husband, too. Yeah, I did my homework. I know your girlfriend’s married.”

Luke left that afternoon, silent and defeated.

That night, I sat on the dock, wrapped in my grandmother’s quilt, watching the sunset turn the lake to gold. I didn’t feel broken.

Instead, I felt like I’d stepped into the light.

Because sometimes, the most valuable thing isn’t the house you inherited.

It’s knowing your own worth. And trusting your gut, even when the truth is terrifying.

If you ever find yourself caught between the love you hope is real and the alarm ringing quietly in your chest, listen. Investigate. Protect your peace like it’s your birthright. Because it is.