I needed to hear her again. I brought the shoebox upstairs, placed it by my nightstand, and bought a refurbished cassette player online. I started a new ritual. Every night, right before going to sleep, I would play one tape. It was a devastatingly beautiful journey through time.

On the first few tapes, you could hear the chaos of our early years. You could hear Tommy yelling about a lost toy in the background before Clara’s soothing voice cut through the noise. You could hear the muffled sound of thunderstorms from 1998. You could hear our old golden retriever, Buster, panting in the hallway.

As the weeks went by, I listened as our children grew up in the background. The background noise shifted from cartoons to the heavy bass of teenage music, and then, finally, to the echoing silence of an empty nest. But Clara’s voice never changed. It was always there, steady, loving, and anchoring.

Last night, I reached the bottom of the shoebox. There was only one tape left. I reached down to grab it, my chest tight with the realization that this was it. After tonight, there were no more hidden memories. I would be out of tape.

But as my fingers brushed the plastic casing, I noticed something was wrong. I always bought the same cheap brand of cassettes with the plain white labels. This one was different. It had a yellow label. I pulled it into the light of my bedside lamp, and my stomach instantly dropped.

The handwriting wasn’t my messy, rushed print. It was Clara’s elegant, looping cursive. It didn’t have a date. It didn’t have a child’s name on it. It just said, “For David.” And underneath my name, she had written: “Listen to this one alone.” My hands were shaking so badly I dropped the tape twice before I finally managed to click it into the player.

How did she know? When did she find out? My mind was racing through decades of memories, trying to pinpoint a moment where she might have discovered my hidden recorder. I pressed play, the mechanical click sounding like a gunshot in the quiet bedroom. There was a long stretch of static.

Then, the sound of her taking a deep, shaky breath. “Hi, David,” her voice crackled through the small speaker. She didn’t sound angry. She sounded tired. It was her older voice, the one from just before she got really sick. “I suppose you’re pretty shocked right now,” she continued, a faint, sad chuckle in her tone.

“I found your little microphone in the linen closet back in 2006. I was looking for the heating pad, reached too far back, and knocked it down. At first, I was confused. Then, I realized what you were doing. I saw the shoebox in the garage a few days later.” I closed my eyes, tears hot and fast spilling down my cheeks. She had known for nearly two decades.