Keyes, along with husband Korvin, is smuggling stolen diamonds into New York. Little does she know she is carrying smallpox as well as stones. Korvin is having an affair with Albright, Keyes' sister, and tells his wife--who's being followed by a Treasury agent--to remain at her hotel. But
she's feeling ill and sneaks out to the office of doctor Bishop, losing the T-man in the process. Her symptoms are treated as a cold, but when a little girl who was also at the office dies of smallpox, the truth is realized. Bishop and the agents try to locate her and ultimately trace her path of
destruction to a cheap hotel owned by her brother. Meanwhile, Keyes discovers her hus...