WEAPONIZED CARTESIAN DUALISM. That’s all you need to know about how awesome this book is.

It’s World War One, and British soldiers are trained that if they die, they should report to headquarters and tell a medium the last thing they saw, to coordinate with military intelligence. Naturally, a ghost and a medium work together to solve the ghost’s murder because that’s the coolest thing you can do with this magic system.

Ghost Talkers is surprisingly light-...