The Swiftest Eagle

From the cover: Danger is always with us and fear around the corner. There is a look in at Scotland and then we are in Malaya, before British Raj and now. Later we are to travel through war-torn Vietnam and Cambodia.
Virginia meets Gareth casually in the Western Isles, with no inkling of the sacrifice he must make for her. Maybe Rat Ferguson steals the whole story in his old paddle steamer the Queen Victoria, as he sails down the Mekong River, across the delta and out on the China seas...with flammable cargo.