Mindgame by Anthony Horowitz is a psychological thriller play set in a mental hospital.
[1] A highly fictionalized account of the London production of this play is the backdrop to Horowitz’s novel, The Twist of a Knife (2022).
Mark Styler, a writer of "true crime" stories arrives at the Fairfields experimental hospital for the criminally insane, with the hope of interviewing serial killer Easterman for a new book.
Farquhar, seemingly annoyed at this, retrieves a strait jacket from a closet and offers to put it on Styler to show what it is like, and he reluctantly agrees.
She cannot undo the strait jacket straps, and as she bends down to get the scalpel from Easterman, he awakens and grabs her, then stabs her behind a curtain.
Doctor Ennis suddenly awakens, and cries out for help; Easterman straps her to a chair and after removing the jacket, asks Styler to kill her.