Of the two PRC Anna May Wong vehicles filmed during the 1942-43 season, Bombs Over Burma is marginally the best, thanks to the cinematic savvy of writer-director Joseph H. Lewis. Relying more on strong visuals than clever dialogue, the film details the contributions of the courageous Chinese guerilla fighters in keeping the Burma Road safe for Allied transport vehicles during WW2. During the arduous construction of the serpentine thoroughfare, a number of Chinese workers are killed by a mysterious saboteur. It turns out that the assailant is English nobleman Sir Roger Howe (Leslie Denison), who is actually a Nazi agent. Chinese schoolteacher Lin Yung (Anna May Wong) is the freedom fighter responsible for the unmasking and ultimate destruction of the duplicitous Sir Roger (the villain's death scene is the film's hands-down highlight).
by Hal Erickson synopsis