Detective Dan Grady's murder in San Francisco Harbor sends shockwaves, particularly for his friend and colleague Captain Bill Street. As Street investigates, he enlists the help of PI James Lee Wong, who brings his expertise in Asian cultures to the case. Meanwhile, reporter Bobbie Logan inserts herself into the investigation, seeking an exclusive scoop. The investigation centers around two leads: Belden's Jewelers, owned by Frank Belden on the brink of receivership, and the Neptune Cafe, run by shady businessman Harry Locket. As the inquiry unfolds, the team must untangle a complex web of suspects and motives to uncover the truth behind Grady's murder.

The Fatal Hour
A murder investigation sparks an unexpected partnership between a detective and his friend, revealing a massive smuggling operation and ultimately exposing the killer's surprising true identity.