Pierre the Maze Detective

All the detectives are enjoying a Christmas Eve party in the Grand Ballroom. But Lord Candy has collapsed!! Can you solve this 1000 piece jigsaw puzzle and help Maze Detective find the antidote, a small purple bottle marked with a skull and crossbones? Mr X has a hot-air balloon waiting to carry away the Maze Cube, can you find the four spare keys in the ballroom and unlock the mystery?