The Laughing Vent

Aron's job is listening. As a music manager, he spots talent in every sound. Then he moves into Silence Tower. Three tenants vanish in three weeks. The only link: each received a call. No words. Just laughter. When his phone rings at 2 AM, Aron hears the same laugh-layered, wrong, coming not from the phone but from the vent in his bedroom wall. The building has a rule: laugh once, the vent remembers.
Laugh twice, it repeats. Laugh three times-Aron never laughs at his clients. Tonight, that might save him.