SYNOPSIS: PART 1: The team undertake an underwater investigation of alleged mermaids at the Great Barrier Reef. PART 2: Hunting for a family ghost who seems to appear as mist in the family photos. OTHER CASES: "Lake Erie Lights", UFO's filmed for 8 straight days performing manoeuvres in Cleveland. Also what looks as video from a police car dash cam apparently captures a ghost crossing the road. Finally Hawaiian UFO video, 3 lights moving in formation across the sunset revealed to be hoax footage.