What Exactly is a MysteryCaper? A MysteryCaper book contains humor, adventure and intrigue. The mystery in a MysteryCaper might center around a puzzle or brainteaser. It could feature a heist, or even a friendly corpse or two—but never anything gritty. That’s not how MysteryCapers roll. Expect to find a lighthearted romp, a brief escape. But no harsh reality. A little cozy, a little crazy and always, we hope, a lot of fun. Enjoy!