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 be the kind of woman to install hidden cameras in my own home. But then, Luke’s “business trips” started to sound empty, and an old neighbor called with questions that gnawed at me. My instincts told me there was more to Luke’s absences than just client meetings and spreadsheets.

For seven years, I thought Luke and I had the perfect marriage, the kind everyone secretly envied. We were like synchronized swimmers—moving through life together in perfect harmony. We supported each other’s careers, planned spontaneous weekend getaways, and dreamed about the family we’d start “someday soon.”

We had it all. Or so I thought.

But I had missed the signs. The subtle cracks in our flawless picture.

I work as a senior editor at a publishing house in Chicago. The last year had been a whirlwind of deadlines, meetings, and stress. My team had three major releases, and I was buried under manuscripts, marketing plans, and endless conference calls. Most nights, I barely had the energy to collapse into bed by midnight, my mind racing with tomorrow’s to-do list.

Luke, however, always seemed to notice. He would give me a tired smile, wrap his arms around me, and mumble something like, “You’re working so hard.” I was so wrapped up in my own exhaustion, I didn’t think twice about his casual sympathy.

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

Two years ago, I inherited my grandmother’s lake house in northern Wisconsin. It’s a charming, old-fashioned place, tucked away between towering pines and crystal-clear water. The kind of place that feels timeless. Growing up, I spent every summer there with Grandma, chasing fireflies, baking peach cobbler, and reading on the dock until the sun set and my skin turned golden brown.

After Grandma passed, she left the lake house to me. It became my safe haven, my sanctuary.

I made it clear to Luke that the lake house was mine. I invited him to visit, of course. We spent one weekend there painting the bathroom and cleaning out the attic, but that was it. He never had a key, never went alone. At least, that’s what I thought.

Over the past six months, Luke’s business trips increased. He said it was due to a “client pipeline expansion.” I didn’t question it. Honestly, I was too caught up in work to even notice.

Luke would leave for a few days, and I’d enjoy quiet evenings alone with my dog and some takeout. It wasn’t until one particular morning that everything changed.

I was rushing to get ready for work, my hair still wet from the shower, when my phone rang. The caller ID read “Wisconsin.”

“Hello?” I answered, balancing the phone on my shoulder as I searched for a missing shoe.

“Sandra? It’s Mr. Jensen.”

I froze. Mr. Jensen was my grandmother’s old neighbor, the one who walked around the lake every morning at sunrise with his dog.

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

“I’m fine, sweetheart. Just wanted to check in. Everything okay with the house?”

I paused, a sudden unease crawling up my spine. “Of course. Why wouldn’t it be?”

“I saw someone up there last weekend,” Mr. Jensen said, his voice steady. “Tall guy. He was unlocking the door like he owned the place. Didn’t recognize him.”

My stomach flipped.

“Oh,” I said, forcing casualness into my tone. “Probably a maintenance worker.”

Mr. Jensen wasn’t convinced. “Didn’t look like he was fixing anything. He had a nice car, and he was carrying grocery bags. Thought I’d mention it.”

After we hung up, I stood there, frozen in my bedroom. Luke had been in Philadelphia last weekend. I thought. Or had he? Did he lie to me?

I didn’t confront him that night. But my gut told me not to let it slide.

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

When I arrived, everything seemed normal. The porch was swept, the windows were closed. But as soon as I stepped inside, something felt… off.

The house smelled different—fresher than usual. Not musty, like it always did after sitting empty for a while, but airy, almost like someone had been airing it out.

I slowly walked through the rooms, my eyes catching small details that sent a chill through me.

A wine glass in the sink with a smudge of coral lipstick on the rim.

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

The bed was made with hospital corners—neat, too neat, not the messy tuck I usually leave.

The pillows were arranged perfectly, like a hotel bed.

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

The trash bin held two takeout containers and a receipt for dinner for two. The dishes listed on it were Luke’s favorites.

I sank into my grandmother’s rocking chair, my hands trembling as the pieces of the puzzle fell into place. The image of Luke with another woman flashed in my mind, and I knew—he had been lying to me. But I needed proof.

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

“Just in case of thieves,” I said aloud to the empty house. But deep down, I knew exactly what I was preparing for.

When Luke returned from his “conference” two days later, I greeted him like nothing was wrong. “How was the trip?” I asked, trying to sound casual.

“It was great,” he said, unpacking his suitcase. “The client meetings went well.”

I nodded, then asked about his meals. “Any good restaurants?”

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

Every word felt like a needle under my skin.

The following Thursday, Luke mentioned another trip.

“Minnesota this time,” he said. “Back Sunday night.”

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

The next 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 to the lake house. Behind him was a slim woman with long blonde hair, holding a designer handbag. She laughed as Luke opened the door for her.

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

I froze. I didn’t cry. Not a single tear.

Instead, I watched as they entered my sanctuary, laughing like they owned the place. After a few moments, I closed the app and began to plan.

The following week, I kept up the act. I asked Luke about his “work trip” and listened as he spun his elaborate lies about dinners and disastrous presentations. But when he mentioned another trip coming up, I struck.

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

He looked alarmed. “What? No, honey. It’ll be boring. Just meetings all day.”

I smiled, an innocent look on my face. “Actually, I was thinking… what if we took a long weekend at the lake house instead? Just us. No phones. No distractions.”

He hesitated, his eyes darting nervously. “I can’t just cancel—”

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

I saw the color drain from his face. “You… talked to Tim?”

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

What could he say? He agreed.

We drove up Friday morning, and he played his usual playlist, trying to act normal. But I could tell he was on edge. When we arrived at the lake house, I made lunch while he unpacked, constantly glancing around like he expected someone to be hiding behind a tree.

After lunch, I said, “I’ve got a surprise for you.”

He looked up, intrigued. “What kind of surprise?”

I smiled. “I put together a little slideshow of the lake house.”

His expression froze. “What do you mean?”

Without saying another word, I turned on the TV and played the footage.

The footage showed him unlocking the front door, the woman behind him, giggling. They entered my home, laughing, and danced in my living room.

I will never forget the look on his face.

“Sandra, I can explain—” he began, panic in his eyes.

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

“You spied on me?!” His voice cracked with desperation, turning to anger. “That’s insane!”

Gaslighting. Classic cheater behavior.

“What’s insane is thinking you wouldn’t get caught,” I replied. “What’s insane is you blaming me for spying on you when 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. “You have until Monday to sign, or the footage goes to everyone. By everyone, I mean your boss, who thinks you’ve been working so hard. And her husband, too. Yeah, I know about your girlfriend. Her husband doesn’t. Not yet.”

Luke left that afternoon, defeated and silent.

That night, I sat on the dock, wrapped in my grandmother’s quilt, watching the sunset turn the lake into a river of gold. I didn’t feel broken. I felt… free.

Because sometimes, the most valuable thing isn’t an inheritance. It’s knowing your worth. Trusting your gut. And listening to that quiet alarm ringing in your chest. Because it’s always right.