The Doctor is set to be destroyed by the Robot, but Sarah bursts in and averts his fate. The Robot escapes and is attacked by UNIT, to no avail. Kettlewell is discovered hidden in a cupboard and he relays how Miss Winters re-programmed the Robot. He explains about his creation and how it was made out of living metal. Ketlewell smuggles Sarah Jane into an SRS meeting, Hilda (Winters) addresses the meeting with true vigour and Sarah learns the truth about Kettlewell. UNIT dive in, but Sarah is taken away by Hilda to an underground bunker.
Patricia Maynard is brilliant once again, very strong performance, I love how Hilda addresses the meeting. Hilda is the true villain of the piece.It's Tom that steals the show, he is utterly and totally entertaining. No wonder he's so well thought of.
It's quite a slick episode. Sarah once again plays a big part, she rescues the Doctor for a change. The Brig is on fine form too, he has some great scenes with the Doctor, it's all done with such sincerity. I like the concept of the SRS, again it feels like a concept that would have belonged to the Pertwee era, but it works.