In the world of "CSI: Crime Scene Investigation," this is the mother of all crossovers.
A three-part story will intertwine all three "CSI" shows -- the original "CSI" set in Las Vegas, "CSI: Miami" and "CSI: NY." The crossover begins with the "Miami" episode (airing 10 p.m. Monday, CBS).
Part two will unfold during "NY" (10 p.m. Wednesday, CBS) and then the conclusion will play out on the original "CSI" (9 p.m. Thursday, CBS).
And it all begins with a severed leg.
In Miami, Horatio Caine (David Caruso) asks Dr. Ray Langston (Laurence Fishburne) to come to Miami after a leg found in the Everglades is discovered -- and it belongs to a girl who went missing in Las Vegas a week earlier.
In the next episode, Langston goes to New York after Det. Mac Taylor (Gary Sinise) and his team identifies a key witness related to the missing person's case with ties to Miami and Las Vegas.
The plot begins to turn here when the "CSI" teams suspect all this is tied into a black market human organ ring.
And taking it back to Las Vegas for the conclusion, Langston's investigation leads him to a prostitution ring in Las Vegas that may harbor a woman key to the case.
This crossover is the first time all three "CSI" shows crossover have been involved in the same story.
In the past two of the three shows have crossed paths, though; Last year, a pseudo-crossover happened when "CSI" and sitcom "Two and A Half Men" traded writing staffs for one episode.
Other highlights for the week of Nov. 8-14 (all times Eastern; Listings subject to change; Check local listings):
SUNDAY
-- "2012: Startling New Secrets" (8 p.m. SyFy). Experts look at what the ancient Mayans may have been telling us about the year 2012.
-- "Gabriel Iglesias: I'm Not Fat ... I'm Fluffy" (9 p.m. Comedy Central). The rotund comic has a showcase to talk about his weighty issues.
MONDAY
-- "Lopez Tonight" (11 p.m. TBS). The former sitcom star and stand-up comic launches his own talk show.
TUESDAY
-- "Table for 12" (8 p.m. TLC). Maybe they should change the name of this network to the "People With A Lot Of Kids Channel." This new series looks at the Hayes family, which has 12 children.
-- "Return to Duty" (10 p.m. MTV). A former "Real World: Brooklyn" cast member documents his time after the show as a soldier in Iraq.
WEDNESDAY
-- "Country Music Association Awards" (8 p.m. ABC). Taylor Swift, Brad Paisley and Kenny Chesney vie for honors at the ceremony broadcasting live. Paisley and Carrie Underwood are the hosts.
-- "Glee" (9 p.m. Fox). Sue (Jane Lynch) shows off her softer side -- which is difficult for a tough bird like her. Plus the kids hold a "diva-off" contest to determine who's the greatest diva.
FRIDAY
-- "Smallville" (8 p.m. CW). Just when you thought all was lost, The Wonder Twins show up to save the day.
-- "Invitation Only: Tim McGraw" (9 p.m. CMT). Tim McGraw performs for a small audience and then takes their questions.
(E-mail Terry Morrow of The Knoxville News-Sentinel in Tennessee at morrow2(at)knews.com.)


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