Doctor Dolittle and the Secret Lake is a Doctor Dolittle book written by Hugh Lofting. The book was published posthumously in 1948, 15 years after its predecessor. Fittingly, it is the longest book in the series, and the tone is the darkest; World War II took place before the book was published, during which Lofting had published his 1942 anti-war poem Victory for the Slain. The book contains passages that almost border on being misanthropic with some very powerful passages concerning war and Man's inhumanity to man. Source: Wikipedia (en)