Sick Heart River is John Buchan's most powerful novel and his last, completed days before his death. It was published posthumously in 1941. Buchan's rich descriptions of the rugged Canadian Northwest Territories are influenced by his real-life voyage down the Mackenzie River in 1937. At that time, Buchan was Governor-General of Canada. The main character, the lawyer and politician Sir Edward Leith... goodreads.com