The note appeared one morning on my desk — unsigned, written in shaky handwriting that made my stomach twist.

It carried no greeting, no name, just a chilling warning that something was wrong.

My first thought was him. His charm was too practiced, his eyes lingered too long, and there was always a hint of something false behind his easy smile.

But as I tried to shake it off, I caught Olivia, a quiet coworker who rarely engaged with anyone, watching him — and me — with unusual intensity. Continues…