EVP- Electronic Voice Phenomena

I shot a scene from my ultra-low-budget horror movie, THE BLOODLET, in the basement of a building I managed and when I played it back in editing, I heard the disembodied voice of someone, other than the cast and crew. About 12 seconds into the clip, after I say "and uh..." a male voice sort of whispers, "You would like me" or something like that. You must listen closely.