DEMETRI AND AGENT BANKS GO AFTER A MURDERER WHOSE TARGETS ARE THOSE WHO THOUGHT THEY'D ESCAPED THEIR FLASHFORWARD FATES, AND MARK HELPS SIMON TRACK DOWN HIS MISSING SISTER, ON ABC'S "FLASHFORWARD"

Alex Kingston ("ER") Guest Stars as Fiona Banks

James Callis ("Battlestar Galactica") Guest Stars as Gabriel

"Course Correction" - Demetri and Agent Banks (Alex Kingston) attempt to track down a killer as questions arise about the universe course-correcting itself, when people who thought they'd escaped their fates are found dead; Mark reluctantly agrees to help Simon find his sister, Annabelle, but discovers he's withholding the truth about her true circumstances; the FBI discovers the identity of Suspect Zero; and Nicole learns the whereabouts of Keiko - the woman in Bryce's flashforward - but struggles with whether to share this information, due to her growing feelings for him, on "FlashForward," THURSDAY, MAY 6 (8:00-9:00 p.m., ET) on the ABC Television Network.

"FlashForward" stars Joseph Fiennes as Mark Benford, John Cho as Demetri Noh, Jack Davenport as Lloyd Simcoe, Zachary Knighton as Bryce Varley, Peyton List as Nicole Kirby, Dominic Monaghan as Simon, Br�an F. O'Byrne as Aaron Stark, Courtney B. Vance as Stanford Wedeck, Sonya Walger as Olivia Benford and Christine Woods as Janis Hawk.

Guest starring are Ryan Wynott as Dylan, Barry Shabaka Henley as Agent Vreede, Alex Kingston as Fiona Banks, Cynthia Addai-Robinson as Debbie, Tim Rock as Michael Zamperion, Callum Keith Rennie as Slingerland, Lena Georgas as Celia, James Callis as Gabriel McDow, Hannah Marks as Anabelle Campos, Chelsea Rendon as Kyra, Guy Kent as Chad, James Frain as Gordon Myhill, Nadine Ellis as Agent Tremont, Michelle Hurd as Liz Kayson, John J. Deignan as Andy Weeks, Glenn Herman as SWAT guy, Malcolm Foster Smith as maintenance worker, Kate Fuglei as Laurie and Shaun Duke Moosekian as Dr. Lahar Bahti.

"Course Correction" was written by Robert J. Sawyer and directed by Leslie Libman.

"FlashForward" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1-channel surround sound. A TV parental guideline will be assigned closer to airdate.

For more information on "FlashForward," visit ABC.com