A medical researcher is sent to a plague outbreak, where he has to decide priorities for the use of a vaccine.

A Man's Past (1927)

A con artist masquerades as Russian nobility and attempts to seduce the wife of an American diplomat.

The wife of an American playwright in Paris becomes ensnared in the seductive wiles of an American Army officer, but her devotion to her husband convinces the officer to try to extricate her from the gossip and scandal that have ensued.