Yakada Yaka is the second part of the Burgher trilogy that began with The Jam Fruit Tree

When the conquering British roll out the first railway steam-driven locomotive in Sri Lanka, it causes quite a stir. The smoke-spewing, banshee-wailing, fearsome black thing hisses like a thousand cobras... and the villagers declare that this Thing is an Iron Demon—a yakada yaka.

The Burghers who drive these Iron Demons have a penchant for challenging authority and courting trouble, sometimes just to liven things up in the railway outposts... and so it is that Sonnaboy and Meerwald chase a large group of villagers all across Anuradhapura, mother-naked but not much bothered by it, Ben Godlieb conjures up a corpse in his cowcatcher, Dickie Byrd single-handedly demolishes a Pentecostal Mission and is hailed as the messiah of the Railway fraternity, and Basil Van der Smaght filches a human heart and feeds it to the Nawalapitiya railway staff ...and to cap it all, Sonnaboy takes French Leave to act in The Bridge on the River Kwai!