"In Search of the Castaways; Or, The Children of Captain Grant" by Jules Verne is a novel published in 1867–68. When a mysterious bottle reveals fragments of Captain Grant's location after his shipwreck, Lord and Lady Glenarvan embark on an extraordinary rescue mission with the captain's children. With only partial coordinates pointing to the 37th parallel south, they must circumnavigate the globe through South America, Australia, and New Zealand. Accompanied by an absent-minded French geographer and facing treacherous betrayals, the expedition races to solve cryptic clues and find the missing captain. (This is an automatically generated summary.)