Ghost Squad Chief Sir Andrew Wilson is convinced that an engineer for a safe manufacturing company has been taking
bribes. The man has been working on a special job at a nuclear research centre where a neutron bomb is being developed. Nick Craig is sent to the centre to investigate.

The Ghost Squad is called in to save the life of a young American, framed for the killing of Stefan Kubitz, a mid-European Prime Minister

Prints of a war criminal are found at the scene of several French bank raids. When the gang is traced to a travelling circus, Craig is sent to infiltrate.

Ghost Squad operator Nick Craig is sent to Rome to impersonate an American criminal lawyer whose life is threatened by professional assassins belonging to a Murder Incorporated set-up in Europe.

In this first episode Craig is sent on a coach to the South of France to lay bare an illegal diamond traffic.