Mystery Of Mr. Wong - 1939 - 6/10

He knew his life was imperiled once he sought the precious Eye Of The Daughter Of The Moon.
In his possession, Brandon showed Mr Wong the note suggesting who his killer would be.
Alas, the murder occurs and the note vanishes.
Nevertheless, there are a clutch of suspects, with various motives.
Typical of the 1930’s, police are hardnosed. Better, there are two esteemed criminologists on the scene.
Fast paced B-mystery should fill a late afternoon.
Understand, yellowface was more common and sadly acceptable back then.