MAY ON CBS: THE GRAND FINALES

Dire Consequences Await Patrick Jane When Red John Returns on "The Mentalist"

Can the CSIs Get an Old Nemesis to Reveal the Identity of the Dr. Jekyll Serial Killer Before It's Too Late?

Alicia Must Decide Between Peter and Will on "The Good Wife"

Gibbs is Forced to Make a Devastating Choice to Save His Team on "NCIS"

A Serial Killer Taunts the Miami CSIs with Cryptic Hints and Dead Bodies

Callen Races to Stop a New War in the Middle East While Discovering More About His Own Past on "NCIS: Los Angeles"

The Rolling Stones Rock "Cold Case"

Marshall and Lily Put Fate to the Test When Deciding Whether to Have a Baby on "How I Met Your Mother"

Howard and Raj Set Up an Online Dating Profile for Sheldon on "The Big Bang Theory"

When Charlie's License is Suspended, Jake Becomes His Driver on "Two and a Half Men"

The Remaining Teams Race to the Finish Line in the Season Finale of "The Amazing Race 16"

The Ultimate Hero or Villain Will Be Crowned in the Special Two-Hour Finale of "Survivor: Heroes vs. Villains"

CBS's May sweep will be highlighted with the season finales and cliffhangers of its hit comedies and dramas as well as the finales of THE AMAZING RACE 16 and SURVIVOR: HEROES VS. VILLAINS.

Guest-starring in CBS's season finales are Eric McCormack (THE NEW ADVENTURES OF OLD CHRISTINE); Leslie Hope (THE MENTALIST); Mayim Bialik (THE BIG BANG THEORY); Stacy Keach and John Amos (TWO AND A HALF MEN); Eric Close, Tim Curry and Robert Davi (CRIMINAL MINDS); Esai Morales (CSI: MIAMI) and Edward Furlong (CSI: NY).

The following are CBS's May season finales and cliffhangers:

Sunday, May 2 (9:00-10:00 PM, ET/PT) COLD CASE-In part one of a two-part episode at a special time, Rush (Kathryn Morris) tries to ignore her father's appeals to give her troublemaker sister another chance after she suddenly resurfaces.

Sunday, May 2 (10:00-11:00 PM, ET/PT) COLD CASE-Valens (Danny Pino) partners with Rush (Kathryn Morris) to locate her abducted, drug-addicted sister, while Jeffries (Thom Barry) tries to bring justice to the case of a murdered teenaged girl that has haunted him for 17 years. Music by The Rolling Stones will play exclusively throughout the episode.

Sunday, May 9 (8:00-9:00 PM, ET/PT) THE AMAZING RACE 16-The end city is in sight for the remaining teams as they make their way from Shanghai to San Francisco. The first team to cross the finish line wins the million dollar prize. Phil Keoghan hosts.

Wednesday, May 12 (8:00-8:30 PM, ET/PT) THE NEW ADVENTURES OF OLD CHRISTINE- Christine (Julia Louis-Dreyfus) begins to doubt her intelligence after meeting Max's (guest star Eric McCormack) friends at their "surprise" engagement party, driving her to make a surprising decision.

Sunday, May 16 (8:00-10:00 PM, ET/PT) SURVIVOR: HEROES VS. VILLAINS- The special two-hour finale begins with five remaining castaways vying for the million dollar prize and title of "Ultimate Survivor." The finale is followed by a one-hour live reunion show hosted by Jeff Probst.

Thursday, May 20 (9:00-10:00 PM, ET/PT) CSI-As the team closes in on the Dr. Jekyll serial killer, Nate Haskell (Bill Irwin), a murderer who Langston (Laurence Fishburne) helped put behind bars last year, holds the key to Dr. Jekyll's true identity. The CSIs must get him to reveal the killer before it's too late.

Thursday, May 20 (10:00-11:00 PM, ET/PT) THE MENTALIST-A murder by a Red John copycat puts Patrick Jane's (Simon Baker) psychic friend Kristina Frye (guest star Leslie Hope) in grave danger when Frye reaches out to the real Red John, with dire consequences for both her and Jane.

Friday, May 21 (8:00-9:00 PM, ET/PT) GHOST WHISPERER-When Melinda (Jennifer Love Hewitt) investigates a poltergeist in Grandview hospital, a final showdown looms with the supernatural forces threatening her and her son.

Friday, May 21 (9:00-10:00 PM, ET/PT) MEDIUM-When Allison's (Patricia Arquette) brain tumor resurfaces, its aftermath could have life-altering consequences for her family and friends. Guest stars include Teri Polo ("The West Wing") as murder victim Mary-Louise Graff and Margaret Colin ("Gossip Girl") as D.A. Kelly Shuler.

Friday, May 21 (10:00-11:00 PM, ET/PT) MIAMI MEDICAL-The career of a young golf prodigy and the lives of three college friends are in the hands of the Alpha Team following a horrific alligator attack. Kari Matchett ("Invasion," "Leverage") guest stars as cardiac surgeon Dr. Helena Sable.

Monday, May 24 (8:00-8:30 PM, ET/PT) HOW I MET YOUR MOTHER-Marshall (Jason Segel) and Lily (Alyson Hannigan) put fate to the test when deciding whether or not they are ready to have a baby.

Monday, May 24 (8:30-9:00 PM, ET/PT) RULES OF ENGAGEMENT-Adam (Oliver Hudson) and Jennifer (Bianca Kajlich) plan a secret wedding; however, a series of unfortunate events puts their plan in jeopardy. Meanwhile, to keep Russell (David Spade) and Timmy (Adhir Kalyan) from finding out about the ceremony, Adam tells them he is staging an intervention for Jeff's drinking (Patrick Warburton).

Monday, May 24 (9:00-9:30 PM, ET/PT) TWO AND A HALF MEN-Jake (Angus T. Jones) becomes Charlie's (Charlie Sheen) driver after his license is suspended. Meanwhile, to Charlie's chagrin, Alan (Jon Cryer) makes plans to go to Chelsea's (Jennifer Taylor) birthday party. Stacy Keach returns as Chelsea's father Tom, and John Amos returns as Tom's boyfriend.

Monday, May 24 (9:30-10:00 PM, ET/PT) THE BIG BANG THEORY-Howard (Simon Helberg) and Raj (Kunal NayyAr) set up an online dating profile for Sheldon (Jim Parsons). Mayim Bialik ("Blossom") guests stars as Sheldon's perfect match.

Monday, May 24 (10:00-11:00 PM, ET/PT) CSI: MIAMI-A serial killer taunts the CSIs by leaving them cryptic hints and dead bodies. The longer it takes the CSIs to decode these puzzles, the more imperiled they become. Esai Morales guest stars as the killer's next target.

Tuesday, May 25 (8:00-9:00 PM, ET/PT) NCIS-In the conclusion of a two-part finale, Gibbs (Mark Harmon) heads to Mexico for a showdown with a drug cartel intent on revenge. Gibbs has to reassess the rules by which he lives when he is forced to make a devastating choice to save the lives of his team.

Tuesday, May 25 (9:00-10:00 PM, ET/PT) NCIS: LOS ANGELES-Callen (Chris O'Donnell) is in a race with a ruthless adversary to locate a woman who knows the whereabouts of a forgotten fortune earmarked to fund a new war in the Middle East. But for Callen, the woman also holds the tantalizing key to his past and the answer to the haunting question of who he really is.

Tuesday, May 25 (10:00-11:00 PM, ET/PT) THE GOOD WIFE-Alicia (Julianna Margulies) must decide if, at Eli Gold's (Alan Cumming) urging, she'll stand by her man during Peter's (Chris Noth) new political campaign, or if she'll pursue a relationship with Will (Josh Charles) instead.

Wednesday, May 26 (9:00-10:00 PM, ET/PT) CRIMINAL MINDS-The BAU team hunts a serial killer in Los Angeles who preys on his victims in the dark, killing entire families except for one left alive to remember. Tim Curry ("Rocky Horror Picture Show"), Eric Close ("Without a Trace") and Robert Davi ("Profiler") guest star in the cliffhanger finale.

Wednesday, May 26 (10:00-11:00 PM, ET/PT) CSI: NY-As the CSIs follow escaped criminal Shane Casey's (Edward Furlong) trail across Manhattan, miles away from the mayhem. Danny (Carmine Giovinazzo) and Lindsay (Anna Belknap) are enjoying a long overdue vacation until Casey's plans threaten to endanger both their lives in this cliffhanger finale.