Place it near the start of a horror edit, just before the subject turns toward the camera, then follow the reveal with the Shocking Sound Effect for the payoff. For a slower mystery build, pair it earlier with The X-Files Theme and let that theme carry the investigation before the reveal.
Über diesen Sound
This six-second clip repeats a soft, distant whisper of “ki ki ki, ma ma ma” over a shadowy, uneasy backing, with no clear speaker and no full line. It feels instantly creepy and unsettling, turning an ordinary scene into something watched and threatening. It comes from the Friday the 13th films, where composer Harry Manfredini created the motif for Jason Voorhees.