Mr Wong in Chinatown 1939 A pretty Chinese woman, seeking help from San Francisco detective James Lee Wong, is killed by a poisoned dart in his front hall, having time only to scrawl Captain J on a sheet of paper She proves to be Princess Lin Hwa, on a secret military mission for Chinese forces fighting the Japanese invasion Mr Wong finds two captains with the intial J in the case, neither being quite what he seems theres fog on the waterfront and someone still has that poison dart gun