Meet Marvin, a lovable monster with a twelve-stringed baby fang guitar, a rambunctious case of ADHD, emotions that sometimes overwhelm him (and others), and a diary to record it all. While Marvin got it together in Marvin's Monster Diary: ADHD Attacks, his lab partner Lyssa's emotional roller coaster is a bit out of control. Can he help her--and win the Science Scare-Fair--before she explodes? In the same humorous spirit of Diary of a Wimpy...