Place it at the reveal point after a build-up clip, not during the search itself. Follow a tense moment with a sudden suspense sound, then use this clip, and end the sequence with an oh my god wow reaction for the group's response.
關於此聲音
A 2.9-second voice clip of the Ghost Host drawing out an 'Ahhh' before adding 'there you are' in a deep, theatrical tone. It feels relieved but also eerily pleased, like you were being watched the whole time. The line comes from the finale of Disney's Haunted Mansion attraction, narrated by Paul Frees.