A junkie is found murdered in the Tenderloin District. When SFPD detectives Terry English and Hildy Mulligan are called in to investigate, they are shocked to discover that the case may be related to the city's youngest billionaire.

As Inspectors Terry English and Hildy Mulligan begin an investigation Terry must also deal with the recent death of his wife and the arrival of his sister-in-law.

The Inspectors search for clues that might link various suspects, including Erich Blunt, to Cindy Strauss' death. Meanwhile, Hildy is confronted by a young witness from a past investigation who worries for his mother's safety after she is physically abused by her new husband.

Erich Blunt ignores his lawyer's advice and escapes for a drug-fueled weekend. Terry and Hildy must deal with the repercussions of Hildy's officer involved shooting. Terry works to get his partner out of trouble.

Erich Blunt takes a lie detector test to prove his innocence. Hildy and Terry discover that a past suspect's alibi does not check out.

Erich Blunt is put on trial for the murder of his flight attendant. Terry decides to start making amends. Hildy begins to reconnect with her ex-husband.