Attack of the J-Clones (S03E17)

The J-Team attends the re-dedication ceremony for the San Francisco Museum's jade collection, only to find it missing once again, with Viper being suspected of the theft. During the chaos, El Toro is caught trying to steal more jade. Jackie pursues the masked thief, only to discover that he is actually a clone. Meanwhile, Capt. Black interrogates Chang, who is imprisoned, and learns that he too is a clone. Observing from a secret lair, the real Chang and his alchemist Yip send the Jackie clone into Section 13. However, the clone fails to replace the original Jackie and escapes. Uncle invents a magical device to identify clones, revealing that Paco is one as well. Disguising themselves as their clones, the J-Team attempts to infiltrate Chang's hideouts to rescue Paco. When detected, they face off against their clone counterparts until Uncle manages to override the clones, turning them against Chang and Yip.