'The Constant' by Carlton Cuse and Damon Lindelof

Sayid and Desmond hit a bit of turbulence on the way to the freighter, which causes Desmond to experience some unexpected side effects...

Matthew Fox (Doctor Jack Shephard), Evangeline Lilly (Kate Austen), Jorge Garcia (Hugo ‘Hurley’ Reyes), Josh Holloway (James ‘Sawyer’ Ford), Daniel Dae Kim (Jin Kwon), Yunjin Kim (Sun Kwon), Naveen Andrews (Sayid Jarrah), Terry O'Quinn (John Locke), Emilie de Ravin (Claire Littleton), Henry Ian Cusick (Desmond Hume), Michael Emerson (Ben Linus), Elizabeth Mitchell (Juliet Burke), Harold Perrineau (Michael Dawson), Jeremy Davies (Daniel Faraday), Rebecca Mader (Charlotte Staples Lewis), Jeff Fahey (Frank Lapidus), Alan Dale (Charles Widmore), Sonya Walger (Penelope ‘Penny’ Widmore), Graham McTavish (Sergeant), Darren Keefe (Billy), Edward Conery (Auctioneer), Marc Vann (Doctor), Fisher Stevens (George Minkowski), Kevin Durand (Keamy), Anthony Azizi (Omar)

Directed by Jack Bender
Produced by Sarah Caplan
Executive Producers J.J. Abrams, Damon Lindelof, Bryan Burk, Jack Bender and Carlton Cuse

TX (US): 28th February 2008

Notes:
*Featuring Jack, Kate, Locke, Sayid, Sawyer, Hurley, Michael, Jin, Sun and Claire