Murder in Successville - Season 3 Episode 6 -

After Professor Green has dispatched the Termite Sleet gets into his car, only for it to be flooded with poison gas, from which he is rescued by his colleague Sid Lowecroft. Sleet is still determined to carry on as Rattman, despite Sid's efforts to dissuade him by reminding him of his successes as himself with previous sidekicks. Now Sleet must make the decision, to carry on in the police force or quit to retain his alter ego as a super-hero.