Detective Michael Shayne (Lloyd Nolan) boards a Hawaii-bound ocean liner on the trail of stolen industrial diamonds and a Nazi smuggling ring.
I have never heard of the Michael Shayne series, and I know by starting here I am jumping in the middle. Hopefully I didn't miss much, but the story still makes plenty of sense. And actually, it is really, really good. I get the feeling this was something of a B-picture, but today (2017) it feels more fun and fresh than some of the A-pictures of the time.
It serves as an interesting blend of detective fiction and spycraft, and has the interesting distinction of being set at least partially in Hawaii. As I understand it, the film was released in 1942 but was probably filmed in 1941... thus they had no idea just how crucial Hawaii would be to the World War II story. In fact, if this was filmed prior to Pearl harbor, America was not technically even in the war yet!