Huntingtower (Barnes & Noble Digital Library)

Staid Scots grocer Dickson McCunn, 55, has a plan: Retire early and take it easy. But soon he is swept up in a daring plot to rescue a beautiful princess imprisoned by scheming Bolsheviks in the rambling mansion known as Huntingtower. This fast-moving 1922 thriller by the author of The Thirty-Nine Steps mixes the everyday with the fantastic.