Grace and the cops investigate the disappearance of a missing child, targeting a troubled high school student. Grace meets her last chance angel Earl after hitting and killing a man while driving drunk. Grace learns that her victim is actually a convicted murderer named Leon Cooley, who is alive and sitting on death row. Grace punches out a man who hits on her, only to learn that he is the richest cattle tycoon in Oklahoma.

Grace and the cops investigate the murder of oilman Bo Grady, revealing incidents with angry anti-oil protesters and unraveling a love triangle. The cops discover that one of the potential witnesses to the murder is the estranged brother of Lieutenant Yukon. Earl challenges Grace to talk to Ham about their affair; a defiant Grace challenges Earl to a wrestling match.

Grace and the cops pursue a murder suspect who has entered a church and claimed sanctuary. The cops meet Captain Kate Perry, the new head of the OCPD Major Crimes Division. Grace gives Clay some tips for an upcoming kissing party. Grace and Earl clash over her lack of belief.

A 17-year-old devout Christian comes under attack just days before he's scheduled to testify in a murder trial, and, in order to ensure his safety, Grace allows him to move in with her. Grace gets angry when Earl uses Clay to get her attention. Earl tells Grace he wants her and Leon Cooley to work together.

Grace's favorite aunt comes to town for a firehouse dedication in honor of Grace's late father and reveals some shocking news. Grace and the cops investigate the theft of a bull statue owned by influential cattle tycoon Alvin Green. Grace comforts Henry when he has to euthanize his beloved cat.

The murder of an alleged call girl leads Grace and the cops to investigate a notorious Oklahoma crime family. Rhetta becomes angry at Grace after discovering that Grace tampered with evidence in a past case. Ham's wife suspects the affair between Grace and Ham. Earl challenges Grace to quit telling lies in her everyday life.