November 1933. London. Seven people receive mysterious letters. Someone knows their terrible secrets. They are summoned to a posh townhouse where one is stabbed right in front of the others, but somehow no one saw a thing. Can you help Scotland Yard solve the mystery?

A “delightfully witty interactive mystery packed with theatrical characters and exciting twists” (G.T. Karber, author of Murdle) from the bestselling author and illustrator of Your Guide to Not Getting Murdered in a Quaint English Village