After stashing away a large sum of money, she shows up at Glenn's door and invites herself in for the night. Glenn, of course, is accommodating. While he's working the next day, she is killed in his apartment. A romance begins, and Glenn solves the mystery behind the murders. When the woman's husband is shot and killed while talking to Glenn, everyone assumes Glenn was the real target.
Romance begins, but it turns out that the woman's alibi was false.
Glenn uncovers a smuggling and blackmailing scheme, the woman in gray ultimately confesses, and the imprisoned widow is set free. But it turns out that the husband has another identity and is living in Macau, smuggling gold to Red China. Glenn and the girl set out on the perilous task of tracking him down. Political intrigue and kidnapping interrupt a couple of times, but romance prevails. Her name, her story keeps changing.