WHEN TWO AIR HOSTESSES END UP DEAD, SAM AND ANNIE GO UNDERCOVER TO UNCOVER A SWINGING MURDER, ON ABC'S "LIFE ON MARS"

Gina Gershon and Mark Linn-Baker Guest Star

"Coffee, Tea or Annie" � When Valerie Palmer, a Pan Atlantic air hostess turns up dead, Annie volunteers for a dangerous undercover mission, posing as the murdered woman to help solve the second in a possible series of brutal homicides. Annie, Sam and Ray, working one of Valerie's flights covertly, uncover an unlikely suspect. Then, an invitation to a lurid swingers' party leads to an evening full of sensational surprises � not just for Annie and Sam, attending undercover as a couple, but Lieutenant Hunt also arrives with a special guest to mix it up. Juicy sexual escapades bring the swingers' party to a fever pitch, but will the murderer be revealed? Finally, Annie confronts Hunt with the courage of her convictions about her future at the 1-2-5, on "Life on Mars," WEDNESDAY, MARCH 11 (10:02-11:00 p.m., ET) on the ABC Television Network.

"Life on Mars" stars Jason O'Mara as Detective Sam Tyler, Harvey Keitel as Lieutenant Gene Hunt, Michael Imperioli as Detective Ray Carling, Gretchen Mol as Annie Norris and Jonathan Murphy as Detective Chris Skelton.

Guest starring are Gina Gershon as Rita, Mark Linn-Baker as Lincoln James, Mark Deklin as Ronald Harris, Kelli Giddish as Carol, Keri Lynn Pratt as Leslie, Hamilton Clancy as derelict, Caleb Wallace as young Sammy, Libby George as old lady, Marla Sucharetza as Mrs. Collins, Scott Robertson as doorman and Jim O'Keefe as Detective James Harrison.

"Coffee, Tea or Annie" was written by Adele Lim & Bryan Oh and directed by David Petrarca.

"Life on Mars" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1-channel surround sound and Spanish subtitles via secondary closed captioning. A TV parental guideline will be posted closer to airdate.

This episode of "Life on Mars" will be available on ABC.com the day after airing on the network for users to watch online.