Gerry Anderson's New Captain Scarlet - Season 1 Episode 9
Skin Deep

Destiny is selected to help test a new flight guidance system at the Aerospace. Research Unit but en route to Falcon Air Base she is ambushed by Captain Black. Shortly after, Destiny is caught on security cameras breaking into an office at the International Defense Force Headquarters and stealing top secret missile launch codes, badly injuring a security guard as she makes her escape. Scarlet is devastated to learn that Destiny appears to have been replaced by a Mysteron replicant and sets out to locate and eliminate the imposter, but the real Destiny is being held prisoner in a clinic where German scientist Janus has developed a device which transforms any face into a perfect copy of another!