When Wilmot throws himself at police clerk Renata her boyfriend 'Engelbert' Morris is up in arms and comes after him but trips up and ends up sitting in a sample that has been spilt on the floor. Ever fearful for his dress code image he whips his trousers off so that when Renata comes in he is literally caught with his pants down in the company of WPC Whatmough. Meanwhile Norman and Millie form an unusual alliance which is misunderstood by Ida.