John Kidd

Steed plans a boat trip, Emma gets very wet.

Oscar Newley has perfected a new fuel injection system for his racing car and approaches Simon for financial backing.

After Lady Marjorie's father dies, her mother, the Countess of Southwold, spends a few days at Eaton Place. When her diamond brooch goes missing, everyone is a suspect.

When agents in Lord Barnes's department at the Ministry of Top Secret Information are murdered, all the evidence points to an enemy agent named Kartovski.