When babysitter Lulu takes the five little monkeys trick-or-treating, they decide to change costumes with their friends and try to fool Lulu and their mother. Interest Level: K-3 Reading Level: 1.9 ATOS Book Level: 2.6 AR Interest Level: LG AR Points: .5 AR Quiz: 161184EN Lexile Measure: 450 Lexile Code: AD (Adult Directed).