Lisa gets some instructions on rhythms from a professional drummer and witnesses the wicked tides at the Bay of Fundy. Trini examines migratory birds. Marc learns about human heartbeats and how a pacemaker works. ANIMATION: Heartbeat. THE BLOODHOUND GANG: "The Case of the Flying Clock, Part Two." Vikki sees through the clock collector's claim that he could identify the burglar. Ricardo recovers the precious flying clock.