Burning questions are raised when a charred vehicle is discovered. Found inside the car: photos of Grace's sister, Paige, which compel Grace to snoop into her sibling's life. Meanwhile, physical clues left by Earl could reveal a shocking truth from Grace's past.

A murder trial results in the arrival of a big-gun Los Angeles defense attorney, whose work may bring to light the team's potentially sloppy investigative work, not to mention the muck of their personal lives---including Grace's lusty dark side. Meanwhile, Ham considers disclosing to Grace his heretofore hushed feelings for her; and Grace is slated to attend her nephew Clay's confirmation.

Grace's investigation of a deadly drive-in robbery swirls around a man with Down syndrome and a home for the mentally challenged. Elsewhere, a romance blooms between Grace and the atheistic nephew of her voyeuristic neighbor Chet.

Grace investigates a possible negligent homicide involving a bus accident that resulted in the deaths of three children, but the case takes a backseat when multiple tornadoes touch down in Oklahoma City. Stormy Grace serves as a first responder during the crisis and helps a trapped twister victim, who's aptly named Dorothy. Meanwhile, Rhetta gets trapped in the morgue; and Leon considers becoming a Muslim.

A case turns personal for Grace when the murder of a young woman is chillingly reminiscent of a crime 11 years earlier. Meanwhile, Rhetta continues her quest to learn more about the otherworldly Earl by collecting physical items the angel leaves behind.

The squad's effort to hunt down a killer results in the death of a well-regarded policeman, a tragic turn-of-events that causes Grace and her colleagues to confront their own mortality issues. Meanwhile, death-row inmate Leon, granted time with his son, mulls over the boy's possible adoption by the mother's new boyfriend.

Grace heads an investigation when a body is discovered in a shallow grave in an apparent Native American burial ritual. She seeks insight from her Native American grandfather, but grows concerned when he displays signs of Alzheimer's disease.

Grace investigates an ever-twisting case involving the slaying of a reporter who was working undercover as a prostitute. Elsewhere, Earl confronts Grace about her chronic lying---something that could even jeopardize her friendship with Rhetta.

Grace's team combs for clues in the vanishing of a bull statue. Among the suspects: a testy ex-wife, a peeved artist and an employee who was injured during the statue's installation. Meanwhile, Grace's eccentric aunt arrives for a salute to Grace's father, a hero during the 1995 Oklahoma City bombing.

Grace must protect a devoutly religious young man who is the only witness to a murder and is set to testify at trial. The case becomes more complicated when vicious death threats hound the witness, prompting Grace to bring him into her home. Meanwhile, Grace has unsettling visions involving her nephew Clay.

A maid materializes as the prime suspect in the murder of a manager of a seedy hotel. But religious and political complications ensue when a local priest offers her a safe haven via the right of sanctuary. Meanwhile, Grace gradually comes to accept the recurring presence of the angel Earl in her life.

Grace and the team investigate the murder of an oilman, using Lt. Yukon's troubled brother as an informant. Meanwhile, Grace sets out to prove her mettle by challenging angelic Earl to a wrestling match; and Ham discovers Grace's romantic past with Butch.

Grace launches an investigation when a 10-year-old girl vanishes. Elsewhere, the hard-living, self-destructive detective's spiritual awakening begins, as do her encounters with an angel, when she's involved in a fatal drunken-driving accident.