Calendar Mysteries – January Joker

January is for Joker...In the first book of the Calendar Mysteriesan early chapter book mystery series featuring the younger siblings of the A to Z Mysteries detectivesGreen Lawn has a problem! When Bradley Pinto wakes up in the night to strange lights in his backyard, he wonders if there are aliens in town. When he sees three-toed tracks in the snow, he's sure of it. His twin, Brian, and friends Lucy and Nate aren't so certain. But then Lucy's cousin Dink, the twins' brother Josh, and Nate's sister Ruth Rose all disappear. Are therereally aliens in Green Lawn? And where could they be taking Dink, Josh, and Ruth Rose?