People looking for genre fiction in this area should look into Abir Mukherjee's detective novels set in Calcutta in the aftermath of WWI. The main protagonist is Capt. Sam Wyndham, a flawed man, and former Scotland Yard detective. Tormented by his experience during the war and the loss of his wife, he chooses "exile" to India. He is teamed up with Sergeant Banerjee, whom he gradually learns to respect. The mysteries are good, and Wyndham has to learn new aspects of the culture he now is in. There are five books, but definitely read them in order, starting with A Rising Man.