The Ripper Case Files provides hours of in-depth sleuthing for the macabre-minded.

There are ten cases to be cracked, each of which requires you to answer a question at three points – the beginning, the middle and the end.

Welcome to the murky underbelly of Victorian London, where Jack the Ripper still roams free – he must be caught before the public discovers that his gruesome murder spree continues. You must use your powers of deduction to outwit the Victorian detectives and solve the monstrous cases presented, culminating in uncovering the Ripper himself! This grisly collection of crimes isn't for the faint of heart, packed with shocking details and insider police knowledge; there will be twists and turns to keep even the keenest-eyed amateur PIs on their toes.

Ten specially commissioned cases set in the dark alleyways and hidden lairs of Victorian London, each designed to test your powers of perception, logic and deduction.

Tim Dedopulos is an author, puzzle setter and editor. He worked for Wizards of the Coast and White Wolf, and has written role-playing games and fiction. He wrote The Ultimate 1001 Puzzle Book and The Greatest Puzzles Ever Solved (both Carlton). He lives in central London.