A locked-room murder. A penthouse thirty-five floors above London. A puzzle only one detective can solve.
When a reclusive industrialist is found dead inside his sealed luxury apartment, the police are left with an impossible question: how can someone be murdered in a room no one could enter-or leave?
For Jaspar, an eccentric, sharp-witted detective with a taste for paradoxes and chess, the case is irresistible. With his pragmatic assistant Alice at his side, he steps into a world of clockwork clues, high-society secrets, and a scheme decades in the making.
As the gears of the mystery turn, Jaspar and Alice must untangle a web of lies before the killer strikes again. But in a case built on precision and misdirection, every answer only leads to another question...
A clever, atmospheric mystery perfect for fans of locked-room puzzles, quirky detectives, and twist-filled investigations.