Alistair Cameron comes from Scotland to Canada when his niece is orphaned. When a magician is killed, Cameron solves the case. He is rewarded by a commission as the first provisional detective in the country, and he is persuaded to stay.

Conflict has broken out, resulting in the death of a white settler. The "Indians" are suspected, but the Inspector keeps an open mind.

Inspector Alastair Cameron investigates several theatrical murder cases which involve a dwarf, an orchestra leader, and an aging soprano.

While investigating the murder of a visiting Englishman, Cameron suspects the local inhabitants know more than they are letting on.

Ontario provincial detective Alistair Cameron investigates the kidnapping of a wealthy man's daughter, but uncovers diamonds, an unexpected villain, a band of pigeons, and a bloodhound.

Why are so many patients in the charity ward dying unexpectedly? Dr. Chisholm calls his friend to investigate.

The wife of a wealthy factory owner is kidnapped by his disgruntled employees. Inspector Cameron is called in to investigate.

Who murdered the kindly old woman? And why did they make it look like she was drunk when she only drank tea?

How many times can a convicted murderer escape the gallows? When the hangman doesn't come, his assistant becomes a hostage in a prison break. Hanged bodies start turning up, and the hunt intensifies

A young constable, in a panic because of local threats to his career, calls on the Inspector to solve a series of arsons.