Sun and Jin desperately continue their search for one another, and Locke confronts his enemy. Guest starring are Alan Dale as Charles Widmore, Kevin Durand as Keamy, Anthony Azizi as Omar, Andrew Divoff as Mikhail Bakunin, Sheila Kelley as Zoe, Fred Koehler as Seamus, Chad Donella as desk clerk, Natalie Garcia Fryman as Ms. Kendall and Larry Joshua as Burditt. Written by Paul Zbyszewski & Graham Roland and directed by Paul Edwards.Omar and Keamy died grisly deaths in the fourth season finale. And died grisly deaths again in this season's Sayid-centric episode. Mikhail Bakunin was the one-eyed guardian of Dharma’s communication station, The Flame. He claimed that at the age of 24, he replied to a newspaper advertisement titled "Would you like to save the world?" and was recruited by a "magnificent man." He eventually ended up arriving on the Island around 1993. He died a grisly death in the third-season finale. Seamus and Zoe, introduced two weeks ago, work for Widmore, but are less scary than Keamy and Omar. Fred Koehler appeared on 92 episodes of “Kate & Allie.” Sheila Kelley appeared on 37 episodes of “L.A. Law.” Fryman and Joshua are making their “Lost” debuts. 9 p.m. Tuesday. ABC.