Return from Witch Mountain

In this sequal to "Escape From Witch Mountain," Tia and Tony leave their safe refuge on witch mountain for a trip to Los Angeles. Tony is kidnapped by the evil Dr. Gannon and his spinster partner Letha and brainwashed into helping Gannon and Letha commit various crimes. It's up to Tia and a gang of truant kids to rescue Tony and prevent a major disaster.