The legend of the Lost Lemon Mine is one of the most enduring unsolved mysteries of the Canadian West. In 1870, so the story goes, two prospectors named Lemon and Blackjack found gold in the rugged mountains of southwestern Alberta or southeastern British Columbia. Shortly after, Blackjack died at Lemon's hand. The distraught Lemon left the scene of the murder and never recovered his senses—or his gold. Despite exhaustive searches by treasure seekers and historians, the mine has never been located.

In The Lost Lemon Mine, Ron Stewart revisits this intriguing story and attempts to answer the tantalizing questions posed by the often conflicting evidence.