Episode 25 - The Forget-Me-Knot

Mortimer turns up outside Steed's apartment, not knowing where he is, who he is or why he's there. He recovers sufficiently to tell Steed that there is a traitor in Mother's organisation, the shadowy "Ministry" but he cannot remember whom.

Mrs Peel also forgets what she learns, shot by the same amnesia-drug gun as Mortimer, when the goons recapture Mortimer. Steed is taking the forgetful Mrs Peel to Mother when they are ambushed - Mrs Peel kidnapped and Steed pumped full of the drug. His only clue to his identity when he regains consciousness in a hospital is Tara's 'phone number, hidden in his boot.

He seeks the help of the new recruit, Tara King, and together they trace two thugs to their hideout. The real traitor is George Burton who has defected to a country that has developed memory-killing darts. With confusion reigning at the Ministry, Steed overpowers the gang with the help of Tara and Mrs Peel, though no one is quite sure why.

Peter Peel, Emma's missing husband, has been found alive in the Amazon jungle and she leaves Steed in the capable hands of Tara King, telling her to stir his tea anti-clockwise. Looking out his apartment window as the Peels drive away, Steed is astounded to discover that Peter Peel is the spitting image of himself.