In Agatha Award-winner Maddie Day's delightfully spooky Cozy Capers Book Group mystery, it's Halloween, and Cape Cod bike shop owner Mackenzie "Mac" Almeida and her book club must unmask a killer . . .

Just in time for Halloween, a new costume shop has opened on Main Street in Westham, Massachusetts. Cape Costumers is a cut above the usual seasonal pop-up stores with their flimsy mass-produced outfits and cheap plastic masks, mostly due to co-owner Shelly, a former Broadway costume designer. But when Shelly discovers her elderly boyfriend Enzo—a Broadway star who retired to Westham—dead of unnatural causes, Halloween suddenly gets a lot scarier.

Sleuthing, Mac has found, is a lot like riding a bicycle: once you learn how, you never forget. Far from being spooked, Mac and the members of the Cozy Capers Book Group put down their weekly book selection and put their heads together to see past a bag of tricks and find a malice-making murderer who's hiding in plain sight . . .