In this sequel to Escape to Witch Mountain (1975) Tia and Tony, teenage sister and brother who possess extraordinary powers, leave their safe refuge on Witch Mountain for a trip to Los Angeles, California (their transport ship lands in the Rose Bowl). Tony is kidnapped by the evil Dr. Gannon and his spinster partner Letha and implanted with a chip and mind-controlled 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.—Adam Chotiner