Dave Keppling32, nicely-dressed. He is a substitute teacher who rotates in and out of all the local middle schools. Guest Star; Pete Morton 20s, all muscle, a thoroughly immoral drug dealer with three prior convictions for assault. Guest Star; Tom McMurphy. Early 40s. He's the owner of a shoe store that is destroyed during a car crash. Guest Star; Charlie Sheridan 18, the cool older brother. He's a well-to-do high school student who has a prior conviction for drug possession. Guest Star; Beth Wheeler 11-13 (No Older) innocence personified. She's a student at Valerie's school who has a seizure in the hallway while Horatio is interviewing Keppling. Valerie Sharp Mid 30s. She is the concerned science teacher at a local middle school and the innocent bystander victim of what appears to be a deadly car collision. (poor calleigh)