Charlotte haunts the living room
Here's a brief description of the contestant's attempt. Someone's probably working writing up more detail!
Charlotte made a video of herself sitting in a chair whilst she used string to slam the door open, make a book fall off the shelf and made a matryoshka wiggle. It was then revealed that the 'Charlotte' in the chair was actually a mannequin wearing a Greg Davies mask, prompting Charlotte to reveal herself underneath the table where she shouted "boo". She received 3 points.
(Written by Taskmaster Wiki contributors)