From the author of the popular A to Z Mysteries comes a story of magical mayhem featuring the younger siblings of the A to Z Mysteries kids! May is for Magic... In the fifth book of the Calendar Mysteries - an early chapter book mystery series - twins Bradly and Brian are celebrating Mother's Day by treating their mom to a hypnotist's show. But when the Pinto family gets home from the show, the twins' mom starts acting strange. She splashes in the bathtub for hours, she leaves corn kernels all over - she even quacks! Bradley thinks his mom has been hypnotized into believing she's a duck! Can Bradley and Brian, with help from their friends Lucy and Nate, turn their mom back into their mom? Parents, teachers, and librarians agree that these highly collectible chapter books are perfect for emerging readers and any kid who loves mysteries!