Detective Inspector Gamble and his team working with the Fraudulent Crimes Squad at the New Scotland Yard are on a mission to nab various criminals who have engaged in fraudulent activities.

A well-remembered police procedural drama from the late 1960s, this show showcases the exploits of Detective Inspector Gamble (Patrick O'Connell) and his aide, Detective Sergeant Vicky Hicks (Joanna Van Gyseghem), Metropolitan officers on the trail of the con-men and fraudsters who operate at all levels of society, from boardroom to bingo hall. This show is notable for being one of the earliest British television dramas to feature a female detective in a leading role. Several storylines focus on Gamble's tangled personal life, which occasionally threatens his efforts to hunt down the sharks (and sometimes the minnows) inhabiting the murky world of international fraud. The first series features guest appearances by Michael Gambon, Paul Eddington, Martin Shaw, Andrew Sachs, Derek Fowlds and Colin Welland, amongst many others.