Tommy is a simple man. He says it quite often himself! He tries to look after his spirited wife, Tuppence, and his son, George, but let's be honest, he isn't the most business oriented. What he does have though, is a knack for espionage and crime-solving! This is the beginning of a new career for this humble man!

When the opportunity to help British Intelligence, this housewife threw away her apron without even looking back! She is the detective she never knew she could become and, without her and her husband's help, many mysteries would have gone unsolved.

Albert is your trusty and quirky chemistry teacher and, now part-time agent. After meeting Tommy in hospital while recovering from an injury, the two reconnect and become Tommy and Tuppence science and technical expert during their missions.

He may be Tommy's uncle, but Major Carter also oversees "The Third Floor", a special branch of the British Military Intelligence. Although Carter is responsible for Tommy & Tuppence new line of work, he tries his hardest to help and protect them from danger.

Rita Vandemeyer is a faded soprano who has suspicious connections to the legendary Soviet assassin Mr. Brown.

Julius Hersheimmer is a self-made man who hires Tommy and Tuppence to help find his missing cousin.