The Toff is faced with danger, but from a very unusual source. To prevent him from connecting a body found in the park with a young girl who is seemingly a target for a murder attempt, the killer unleashes an attack using deadly scorpions, snakes and poisonous spiders. Moreover, one of ‘The Toff’s’ best and oldest friends is suspected.

Whilst returning home from a cricket match at his father's country home, the Honourable Richard Rollison - alias The Toff - comes across an accident which proves to be a mystery. As he delves deeper into the matter with his usual perseverance and thoroughness , murder and suspense form the backdrop to a fast moving and exciting adventure.

The Nazis have stored radium somewhere in Europe. Dr. Palfrey must find it, but there is a business syndicate also involved who aim to bring Europe to an economic standstill and ultimate starvation. They conceal themselves with curious black masks, but other clues emerge and their plans are well advanced. Will Palfrey be in time?

The underworld inhabits the Thames, but Scotland Yard's finest detective is never far behind them . . . A dropped package puts him on the trail of an international diamond smuggling operation which uses it as its entry point. Further complications arise during a display of furs and jewels, but danger comes from an unexpected quarter.

A VIP mysteriously disappears, and a diamond smuggling ring appears to be operating out of South Africa. Chief Superintendent Roger (‘Handsome’) West of Scotland Yard is sent out to investigate, but is lead into difficult and dangerous situations.

When John Mannering (aka ‘The Baron’) set out to value an old lady's paintings, blackmail, arson and murder followed. A young girl almost paid with her life for keeping silent, houses were destroyed to prevent detection, and Mannering was in instant peril of losing his life.

A gripping mystery in which John Mannering flies out to India to help an old friend. There is a Maharajah who seeks credit, a dealer in jewels whose main interest is drugs, and an attempted detention. The Baron and his friend both have enemies — dealing not just in diamonds, but also death.

Commander George Gideon of Scotland Yard is seriously worried about cases of child molestation and murder. Meanwhile, London has been subject to sustained power cuts - what is behind them? Is it problems with the electrical supply, or even some form of economic difficulty, or is organised crime involved?

The fabulous Sumi crown jewels are up for sale-including the Mask of Sumi, a beautiful yet strangely repellent object. When the jewels are stolen, and taken on board ship by a woman, the Baron follows, only to find himself involved in a murder and in the midst of some very messy oriental politics.

Why is George Morrow being threatened? Why was Jimmy Garfield murdered? What was really in the box that he kept in the seat of his wheelchair? John Mannering - alias ‘The Baron’ - takes on another spine-tingling adventure and seeks to solve the mystery.