Not among his best.

It is an adventure story of sorts about a young American nurse afire with missionary zeal to help the oppressed women of India. She makes her way to Rajputana pursued by her spurned suitor who wants to win her back and steal a fabulous necklace, the Naulahka, from the local Maharajah while he's in the neighborhood. In the end she is defeated by the stubborn superstition of her patients and gives up, marries the guy and returns home. Meanwhile, he has secretly extorted the necklace from the Queen, but he realizes that the tentative hold he has on his girl would dissolve immediately if she ever found out about his actions, so he secretly returns the jewels.

This is pretty lame stuff from the man who gave us Kim and The Jungle Books, but of course it's beautifully written and full of closely observed detail. There are wonderful scenes with the son of the Maharajah, a troubled boy beset by danger from the rival factions in the palace. There is a not so wonderful scene where the beautiful but wicked Queen tries to alternately seduce and murder the American hero ... corny!