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 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.