Sheriff Lamb and Savino join forces to take out the man responsible for putting Katherine in the hospital. Meanwhile, Jack plans to propose to Mia.
When Sheriff Lamb investigates the death of Porter Gainsely's attorney, it triggers retaliation attacks that puts Katherine in the hospital and leaves Lamb without a badge. Meanwhile, Sheriff Lamb also discovers new details that could reveal the truth behind his wife's untimely death.
Sheriff Lamb needs to find a way to help his son when Katherine arrests Dixon after a bruised Violet accuses him of assaulting her. Meanwhile, Savino has his own problems when Lena finds a gambler’s body in one of the Savoy’s suites.
Sheriff Lamb investigates when a dead man is found in his car by the side of a desert road, while Dixon is assigned to watch over a rowdy Hollywood starlet in town for a movie shoot.
Jack is faced with breaking some dire news to Mia, while at the same time he's compelled to hide vital information from her and his brother.
Sheriff Lamb’s former flame reappears and seeks his help finding the man who attacked her husband. Meanwhile, Savino has a unique way of dealing with a snitch inside the casino.
Sheriff Lamb assigns Dixon an undercover job at the Savoy when Savino suffers a series of robberies, while Ralph and Jack look at the mob when they investigate the murder of the biggest contractor in Las Vegas.
Sheriff Lamb finds himself in the unusual position of protecting Savino when Milwaukee puts out a hit on the mobster. Also, the results of the mayoral election are in.
Savino decides it’s time to put a new, mob-friendly mayor in office, and with his wife Laura’s help, grooms George Grady for the campaign. Meanwhile, Sheriff Lamb investigates the murder of a dentist who appears to have been killed because of his gambling addiction.
Mia's father, a hot-headed Chicago mob boss with a gambling problem, causes trouble for Savino when he visits the Savoy.
Ralph Lamb wants to be left in peace to run his ranch, but Las Vegas is now swelling with outsiders and corruption which are intruding on his simple life. Recalling Lamb's command as a military police officer during World War II, the Mayor appeals to his sense of duty to look into a murder of a casino worker – and so begins Lamb’s clash with Vincent Savino, a ruthless Chicago gangster who plans to make Vegas his own.