Whipsaw

A trio of thieves plans to steal a set of pearls. They follow them across the Atlantic and abscond with them in New York City. But their actions are being monitored by the Department of Justice and a rival gang.

Vivian Palmer (Myrna Loy), who is one of the jewel thieves, teams up with Ross McBride (Spencer Tracy) to elude the police and their other ruthless pursuers. But neither trusts the other. Circumstances force them to pool their resources and efforts, and they learn more about each other. The term "whipsaw" relates to McBride's feeling of being torn between two opposing allegiances.

Myrna Loy really holds this film together. She displays layers of emotions and confusion as her character attempts to play both sides against the other. This is a good romance; the chemistry between Loy and Tracy is strong.