The first time I met my husband’s mistress, she put both hands on my seven-month-old baby’s shopping cart in the middle of Costco. She looked past me at my son Owen, smiled as if she already knew him, and said, “Ethan said I should start getting used to shopping with him.” Ethan was my husband, and before I could understand why this stranger was speaking about my child like that, she told me her name was Brooke. Then she added that Owen looked even more like Ethan in person.

The afternoon sun was dipping below the tree line when I pulled my Honda SUV into the gravel overflow parking lot of the Briarwood Lane apartment complex in Raleigh. I had dropped Owen off with my mother in Durham two hours earlier, fabricating a lie about needing to meet with a divorce attorney and sort out paperwork in the city. My mother had squeezed my hand, her eyes swimming with sympathetic tears, and told me she would keep him as long as I needed.

Unit 3B was located on the second floor of Building C, overlooking a small courtyard with overgrown boxwood hedges and a rusting playground set.

I killed the engine, turned off the headlights, and adjusted the rearview mirror so I could keep a clear view of the front door. I had been sitting in the parking lot for twenty minutes, sipping lukewarm coffee from a thermos, when a silver sedan pulled into the designated carport marked 3B.

The driver’s side door opened, and Brooke stepped out.

She was wearing a sleek camel trench coat over black leggings and ankle boots, her blonde hair falling in loose waves over her shoulders. She looked tired, her movements mechanical as she grabbed a large designer tote bag from the passenger seat. But what caught my attention wasn't Brooke herself—it was what she was pulling out of the back seat.

A Maxi-Cosi infant car seat.

My breath caught in my throat. I pressed myself flat against the driver's seat, my eyes locked on the scene unfolding thirty yards away.

Brooke unbuckled the car seat from its base, hoisted it effortlessly onto her forearm, and carried it toward the staircase leading up to Unit 3B. Inside the translucent canopy of the car seat, a tiny baby arm reached out, clad in a pale blue onesie with little white stars.

Stars.

The exact pattern of the crib sheets I had bought for Owen's nursery.

Panic, cold and sharp, flooded my veins. I threw off my seatbelt, pushed open the car door, and started walking across the asphalt before my brain even had time to process the consequences of my actions.

"Brooke!" I called out, my voice cutting sharply through the quiet parking lot.

Brooke froze on the second-to-last step of the exterior staircase. She turned around slowly, her face going pale when she saw me marching toward her. For a second, the sweet, innocent facade vanished entirely, replaced by a defensive, hard-edged glare.

"What are you doing here, Claire?" she demanded, shifting the infant car seat higher on her hip as if shielding the baby from a physical threat. "This is harassment. I'm calling Ethan right now."

"Go ahead," I said, stopping at the foot of the stairs, looking up at her with fire in my eyes. "Call him. But before you do, answer me one question: How old is that baby?"

Brooke’s jaw tightened. She lifted her chin defensively. "That is none of your business."

"Is it Ethan's?" I asked, my voice trembling with suppressed rage. "Did you have a baby while we were married, funded by my mortgage payments and my grocery budget?"

Brooke let out a harsh, mocking laugh. "You really are pathetic, aren't you? You think everything revolves around you and your perfect little Cary life. Ethan told me you were completely self-absorbed, but I had no idea you were this delusional."

"Then prove it," I challenged, taking a step up the metal stairs. "Open the car seat canopy. Let me see the baby's face."

"Get away from me!" Brooke shrieked, her voice echoing off the brick walls of the apartment building. She spun around, fumbling with her keys in the lock of Unit 3B, pushed the heavy door open, and stepped inside, slamming it shut behind her with a resounding crash that rattled the hallway glass.

I stood frozen on the landing outside the door.

From inside the apartment, a baby began to cry—a soft, high-pitched wail that sounded hauntingly familiar.

I reached out, my trembling hand hovering just inches from the brass doorknob of Unit 3B. I wanted to turn it, push it open, and tear the walls of this secret life down to the studs.

Suddenly, my cell phone buzzed violently in the pocket of my coat.

I pulled it out. The caller ID flashed Ethan.

I swiped the screen and brought the phone to my ear without saying a word.

"Claire," Ethan’s voice was shaking, breathless with rage and panic. "What the hell do you think you're doing? Victoria just called me saying you're staking out Brooke's apartment. Are you out of your mind? You need to leave right now, or I swear to God I will file a restraining order against you by morning."

"Is it his, Ethan?" I asked, my voice dead, cold, and entirely devoid of fear. "Is that baby yours?"

Silence stretched across the phone line for so long I thought the call had dropped. When Ethan finally spoke, his voice was a hollow, defeated whisper.