While the Chicago mob sends Vincent Savino to Las Vegas to take over a casino and uncover a rat, the mayor appoints local rancher Ralph Lamb sheriff to investigate the murder of the governor's niece.

Vincent Savino tries to get to a killer in police custody before he makes a deal to turn on the mob, and gets some new help from Chicago to run the casino. Meanwhile, sheriff Lamb investigates the murder of a casino dealer.

While the sheriff investigates the death of an Olympic boxer, Vincent runs into some difficulty when one of his Chicago bosses gets in trouble with the law.

Vincent makes new enemies when he tries to buy out a neighboring casino, and sheriff Lamb investigates the murder of a cleaning lady who was making trouble for her labor union.

Vincent tries to convince his visiting wife to stay with him in Vegas, the sheriff investigates the kidnapping of a gaming commission member's son, and a hitman for the Milwaukee crew comes to town searching for answers.

When the bodies of the two missing Milwaukee mobsters surface and the hitman returns to town, sheriff Lamb puts Vincent under his own protective custody.

The sheriff works with the Air Force to investigate the murder of a military doctor, and an old flame of Vincent's creates trouble when she comes to perform at the Savoy

The sheriff investigates the rape and murder of a young dancer, and Vincent takes steps to keep an oil tycoon up a million dollars from getting out of the casino.

The sheriff discovers that a murdered contractor made lots of enemies, while Jack's courtship of Mia heats up. At the Savoy, Vincent gets disturbing news about Diane Desmond, and Dixon helps Vincent catch a thief.

The sheriff tries to stop two brothers on a robbery spree, Johnny Rizzo gets Vincent in trouble with the bank, and Mia needs Jack's help to bust a suspected card cheat.

While the sheriff's office investigates a murder connected to a divorce ranch, an old flame pays a visit to Ralph and Mia tells her dad about her relationship with Jack. Meanwhile, Vincent discovers that his wife is the rat.

A young singer in a family act is poisoned at a hotel, Vincent and his friends are stranded in the desert after their car breaks down, Jones escapes police custody, and Johnny Rizzo abducts Jack Lamb to get answers about Mia.

Jack hides from everyone that he killed Johnny Rizzo, Dixon helps an old friend caught up in an auto theft ring, and another hotel steals an up-and-coming singer from the Savoy.

The sheriff discovers that a shooting victim had two wives, the Feds shut down the Savoy's "skim" to Chicago, Dixon helps a young actress in town to shoot a movie, and both sheriff Lamb and Vincent suspect that Jack killed Johnny Rizzo.

When a Savoy employee is busted with an underage prostitute, the sheriff, the FBI and the casino all make their play to get the parties to cooperate. Meanwhile, Dixon and Violet's romance heats up.

D.A. Reynolds stages a kidnapping and disappears with the Savoy's skim money. Meanwhile, Yvonne goes to Hollywood for an audition and Dixon joins her to see pay Violet a surprise visit, and Mia's birth mother arrives in Vegas.

Violet returns to town and accuses Dixon of assaulting her, and Frank discovers that a dead guest may have been a con artist.

A Savoy employee with a phony identity is killed, and another employee holds Mia hostage. Meanwhile, Frank has some trouble with an investor, and Dixon and Yvonne's relationship gets off to a rocky start.

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.

After the sheriff, the D.A. and Frank Savino all come down hard on Porter Gainsley, he decides to fight back.