[Book 9 of the Oz series. Illustrated by John. R. Neill.] It was Baum's personal favorite of the Oz books and tells of Cap'n Bill and Trot journeying to Oz and, their fight, with the Scarecrow, against the cruel King Krewl of Jinxland. Cap'n Bill and Trot (Mayre Griffiths) had previously appeared in two other novels by Baum, The Sea Fairies and Sky Island.