Mike begins to doubt his place in Las Vegas Sam invites a client to visit the casino for the holidays Delinda and Piper plan a Hot Santa contest to win the casino charity competition.
The effects of the Montecito robbery reverberate all over Las Vegas Danny tries to fend off federal agencies' accusations Delinda wants Cooper and Sam to apologize to each other Piper and Mike help a widow carry out her husband's last wishes.
Danny gets a surprise visit from the fire marshal and his alcoholic uncle Mike keeps an eye on the casino's Hand on Hard Bodies competition Cooper forces Sam to help a contestant thieves break into the casino.
The casino plays host to an environmentally friendly conference Danny questions Delinda's plan for a new "green" lifestyle Sam tries to capitalize on high rollers looking for love Cooper shows a new side of himself when a mystery woman arrives.
Danny and Mike see a strip-club owner get physical with a stripper Delinda advocates for better rights for exotic dancers in the city Piper enlists Sam's help to find a racy video that she does not want people to see.
In the spirit of Halloween, Piper dresses up in various costumes to scare her co-workers Cooper insists on shadowing Sam.
Danny and Mike head to Cooper's suite for a meeting but find themselves in the middle of a crime scene Piper (Camille Guaty) tries to help the son of one of the casino's big clients learn to be cool.
Cooper secures a beauty pageant for the Montecito, but things go awry when someone sabotages the contestants Sam thinks she sees a casino guest murdering a woman but has difficulty trying to convince Danny that she is not hallucinating.
Ed, Danny, Mike and Delinda must take matters into their own hands when a world-famous mummy is stolen before it reaches a planned exhibit at the Montecito.
Ed must seek inner peace because one blowup could put the Montecito's gaming license at risk Mike hopes to purchase a condo a basketball player Sam hosts takes an interest in Mary.
Ed, Danny and Mike bet on who can find the most waste at the Montecito Mary must sell the last residential suite and hopes to entice big money with a performance by John Legend.
One of Ed's favorite former employees (Kate Levering) returns with her husband (Judd Nelson) to celebrate her wedding anniversary at the Montecito Mary and Sam disagree about which guests are most important and fight for OK Go's time.
Minutes before a rare wine discovered in the Montecito's cellar is auctioned off for $1 million, Mike realizes it is not genuine a group of retirees checks into the hotel for a Sudoku tournament.
Everyone reluctantly participates in Ed's Secret Santa gift exchange Danny's car is stolen on Christmas Eve Delinda eagerly plans her first Christmas with Danny.
A blacklisted mobster (Vincent Pastore) purchases the Montecito's million-dollar wedding package, including Wayne Newton, for his daughter, but problems arise because Wayne is on bad terms with Ed.
Ed and Danny have 12 hours to save Delinda from her kidnappers Mike and Sam try to figure out whether a Buddhist monk's major winning-streak is a scam.
Athlete Sasha Cohen stops by the Montecito Delinda answers Dr. Derek's marriage proposal Sam and Woody share a romantic weekend together.
Ed and Jillian go on a retreat that proves to be anything but peaceful Danny and Josh deal with a suspicious character who wants to make bets of $1 million per hand.
Danny and Delinda decide to keep their romance a secret the department heads go on a paintball retreat.
Danny and Mike divide their time between investigating a string of robberies in the residential suites and posing for a beefcake calendar Jillian panics when her therapist tells her that her marriage sets a bad example for Delinda.