Crossover Covers: The Sky Masters

In an earlier post, I covered the first novel in Bill Craig's series featuring adventurer Michael "Hardluck" Hannigan. In the second novel, The Sky Masters, Hannigan and his friend Gregor Shotsky (who first met each other aboard a steamer called the African Queen) throw in their lot with Abigail Grayson, who like her deceased father, Sir Edmond Grayson, the Earl of Graystoke, is a British Intelligence agent. The three rendezvous at a café in Casablanca called the Blue Parrot, which is owned by an obese man named Ferrari. The African Queen is from C. S. Forester’s novel of the same name. Abigail and her father are probably related to the Duke of Greystoke. The Blue Parrot and its owner Signor Ferrari are from the classic film Casablanca.