Jim is assigned to look after an important gang informant's mother, who is in danger of being kidnapped by a vengeful gang leader.

When members of two feuding families decide to settle their differences with an old-fashioned duel, Jim ends up with a murder to investigate.

Phillipa, out on parole, decides to give Jim some unwanted help in finding a stolen horse.

A business acquaintance of Charlie's is suspected of insider trading.

The discovery of a dead body in an empty cottage sparks off a nightmarish case for Jim and his partner, an unorthodox London detective.

Jim places his career in jeopardy while trying to help Charlie Hungerford.