A popular mannequin graveyard is set to host a one-night-only mysterious and intriguing Halloween event to be turned into a film. On Saturday (October 26), people are invited to experience the “most grotesque Halloween” at Mannakin Hall in Fullbeck for its — The Brain Float Retreat event. The event follows the story of a group that was promised the miracle cure for a pain-free eternal life, many went to the Brain Float Retreat but no one returned. The Brain Float people are back again and it is visitors have the chance to investigate what happened all those years ago. Roz Edwards, owner of Man…