This showcases Fortune’s unique style of forensic and psychological deduction. As fellow Golden Age titan Agatha Christie once noted, the appeal lies in Reggie's ability to deduce "a whole malignant growth from one small isolated incident".

The collection has eight mysteries, including:
The Rock Garden -- A mystery centered on an ill-situated rock garden and a deeply haunted man.
The Silver Cross -- A tale concerning a rigidly saintly clergyman suspected of a trivial, out-of-character theft.
The Bicycle Lamp -- A grim investigation into a dead policeman and a broken bicycle lamp.