The Black Camel (1929) is the fourth of the Charlie Chan novels by Earl Derr Biggers.
It tells the story of a Hollywood star (Shelah Fane), who is stopping in Hawaii after she finished shooting a film on location in Tahiti.
Chan, in his position as a detective with the Honolulu Police Department, "investigates amid public clamor demanding that the murderer be found and punished immediately.
In Robert A. Heinlein's 1970 novel I Will Fear No Evil, the kneeling black camel reference is employed as a euphemism for death near the start of chapter 2.
In Robert A. Heinlein's first published work, a short story called "Lifeline", Dr. Pinero says "I can tell you when the Black Camel will kneel at your door."