The Sontaran Experiment (2) Doctor Who : Season 12 Episode 10
TV-PG BBC Television 25m
Aired: March 1st, 1975 @ 5:15 PM EST on BBC Television
The Doctor learns that Styre has been experimenting on the Galsec crewmembers to pave the way for a Sontaran invasion of Earth and decides the only way to halt his plans is to challenge him to a duel.
