Marker follows a lead on a shoplifting case from Brighton to Windsor, straight into the arms of the police.

A suspect proposition brings Marker into contact with stolen goods.

A case of blackmail puts Marker in the firing line and he gets his office turned over as a result.

Marker has to bone up on the fine arts when he is asked to investigate a counterfeit paintings scam.

A missing person case turns sour when Marker suspects that he's being used to get to someone.

Marker has to be very discreet indeed when he investigates a theft at an exclusive home for genteel ladies.

Marker is hired to investigate the motives behind a suicide, but the more he digs the more sinister the situation becomes.

A routine background check leads Marker into the murky world of credit fraud.

Marker is asked to check on a suspected infidelity, but his investigations turn up something altogether more unexpected.

Marker encounters conflicted loyalties when he's asked to track down a father who has abducted his own son.

Marker is hired by a rich American to track down the English branch of his family tree.

Marker is asked to keep an eye on a daughter whose suspect friends may be responsible for a string of petty thefts.

Marker helps a suspended policeman but he has to act carefully when he discovers that the officer is consorting with known criminals.