The best Jean Hersholt’s thriller movies

In Puerto Rico to investigate a glut of contraband diamonds that are flooding the world's jewel market, Mr. Moto and his sidekick, a wrestler, find themselves involved in murders by thrown daggers, the frame-up of an overstressed Army colonel, and a pirate gang led by an unknown boss who has inside knowledge of the ensuing investigation.

A corrupt night court judge tears an innocent young family apart in his efforts to elude a special prosecutor.

As a luxurious ocean liner makes its way across the Atlantic Ocean, the audience is made privy to the travails of several of its passengers. Edmund Lowe heads the cast as Monty Greer, a suave gambler who falls in love with Judy (Lois Moran), the daughter of immigrant lens grinder Rudolph Kramer (Jean Hersholt). In trying to recover some valuable securities stolen from banker Henry Graham (John Halliday), Greer finds himself in the middle of a fierce gun battle in the ship's engine room. Meanwhile, Graham, who has been cheating on his wife Kay (Myrna Loy) with sexy dancer Sigrid Carline (Greta Nissen), is murdered by person or persons unknown. And that's only three of the plot strands in this marvelously complex shipboard thriller.

Young Italian girl wants to become a great opera singer.