Episode Title:
Secret of the Spectral Sister.
Episode Description:
Mr. T and company visit Robin and Spike's family in Chicago. There, Robin is telephoned by... her older sister Cathy, who died in a plane crash five years ago and whose body was never found. (Or did she?) That's when two burglars search Cathy's old bedroom for something the girl was working on at the time of her death (or at least her disappearance). The team must learn what they can about Cathy, in order to sniff out the burglars.
