The day before her wedding, my sister smiled and said the best gift I could give her was to disappear for a while. So I did exactly that. I sold the condo she already thought was hers, placed an envelope at every guest’s table, and by the time dinner began, the truth was ready to open.

The more I replayed recent memories, the more uneasy I became. Gavin always grabbed his phone the second it buzzed, even mid-sentence. He never left it face down on the table like most people did. He kept it in his hand, screen pointed away from everyone, especially Evelyn. She once told me he had added a complicated passcode because he traveled for work and needed extra security. At the time it seemed normal enough, but now it felt suspicious.

And there was that afternoon three months ago when a woman I had never seen before showed up at my office reception asking for me. She said she needed to ask a question about someone named Gavin Rhodes. I remember blinking in surprise because she looked anxious, almost frantic, but before I could even get her name, she received a phone call and hurried out. Back then, I assumed she had the wrong person or maybe it was some bizarre misunderstanding. It did not feel like a misunderstanding now.

I usually tried to keep out of Evelyn’s romantic life, but as I gathered my things to leave work early and head to the rehearsal dinner, I felt an urgency I could not ignore. Something was wrong. And if Evelyn would not tell me, then I would have to look for the cracks myself.

The venue sat right on the water, with large windows facing the lake. The early evening sun glowed orange over the surface, people mingled on the patio, and the waitstaff moved briskly between tables. It should have been beautiful, and maybe it was for everyone else, but my nerves made the whole place feel slightly off balance, like a painting hung crooked on a wall.

I spotted Evelyn near the bar, surrounded by her bridesmaids. She was smiling, but it was the hollow kind that never touched her eyes. When she saw me, she gave the smallest nod, the kind of acknowledgement you might give a distant acquaintance. Not a sister. Gavin was across the room talking loudly with two of his groomsmen. When he caught sight of me, he walked over with that polished grin. He asked if I was ready to take on my role tomorrow, his tone dripping with that same condescension he had used last night. I told him I knew exactly what my role was. He chuckled like I was being dramatic and said I had a habit of making simple things more complicated than they needed to be.

I wanted to ask him why he always snatched his phone so quickly when it buzzed. I wanted to ask him where he had been the night Evelyn called me crying two weeks ago, saying she felt alone in her own relationship. I wanted to ask him who the woman at my office was and why she had known his full name. But I kept my mouth shut because Evelyn was walking toward us. She touched Gavin’s elbow lightly and asked about seating arrangements. He turned toward her, his entire demeanor softening instantly, and I felt like I was watching someone slip into a costume they wore only for certain people.