CHARLIE QUESTIONS WHETHER DESMOND HAS HAD ANOTHER "FLASH" FORESHADOWING HIS DEATH WHEN COAXED INTO JOINING A TREK ACROSS THE JUNGLE, AND JEALOUSY MOTIVATES KATE TO TURN TO AN UNSUSPECTING SAWYER, ON ABC'S "LOST"

"Catch-22" � Desmond coaxes Charlie, Hurley and Jin on a trek across the jungle after experiencing one of his future-prophesizing "flashes" -- but is he purposely placing Charlie's life in harm's way? Meanwhile, Kate turns to an unwitting Sawyer after seeing Jack alone with Juliet, on "Lost," WEDNESDAY, APRIL 18 (10:00-11:00 p.m., ET), on the ABC Television Network.

"Lost" stars Naveen Andrews as Sayid, Henry Ian Cusick as Desmond, Emilie de Ravin as Claire, Michael Emerson as Ben, Matthew Fox as Jack, Jorge Garcia as Hurley, Josh Holloway as Sawyer, Daniel Dae Kim as Jin, Yunjin Kim as Sun, Evangeline Lilly as Kate, Elizabeth Mitchell as Juliet, Dominic Monaghan as Charlie and Terry O'Quinn as Locke.

Guest starring are Sonia Walger as Penny Widmore, Jack Maxwell as Derek, Joanna Bool as Ruth, Andrew Connolly as Brother Campbell, Andrew Trask as older monk and Marsha Thomason as Naomi.

"Catch-22" was written by Jeff Pinkner & Brian K. Vaughan and directed by Stephen Williams.

"Lost" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1-channel surround sound and Spanish audio via SAP.

A TV parental guideline will be assigned closer to airdate.