A young woman, travelling to East Africa for the first time, finds herself suddenly immersed in a murky maelstrom of deceit and intrigue in a world where the British Empire enforces its rule with airships and tussles with other expansionist European powers.
A great many years ago, I first read a story entitled With the Night Mail. When read with modern eyes, this is quite definitely a tale to be classified as SciFi even though it was written in 1905 by Rudyard Kipling (he of Mowgli fame) and set in his Aerial Board of Control universe. Indeed, when I first read it, this story was the first item in a collection entitled "100 Years of Science Fiction".
The then-future world postulated by Kipling was one where almost all trade and commerce was ruled by vast airships, flying thousands of feet in the air and guided by upwards-pointing lights known as "cloudbreakers", like lighthouses of the sky.
So this tale is based in a similar universe, where the commerce of the British Empire in late Victorian times is conducted by airship, rather than steamers.
I have aready started work on an explicit sequel called Observatory Mount and a second called The Steam Road. I have now begun a third story in the sequence called Clockwork Cabaret and a fourth called Camera Obscura.
These stories are all set in what is probably the same universe as The Cassandra Effect.