Episode 5.15: Follow The Leader (Richard-centric)
Airdate: May 6, 2009

Jack and Kate find themselves at odds over the direction to take to save their fellow island survivors, Locke further solidifies his stance as leader of “The Others,” and Sawyer and Juliet come under scrutiny from the Dharma Initiative.

Guest Cast: Nestor Carbonell as Richard Alpert, Francois Chau as Dr. Pierre Chang, Doug Hutchison as Horace Goodspeed, Patrick Fischler as Phil, Eric Lange as Radzinsky, David S. Lee as younger Charles Widmore, Alice Evans as younger Eloise Hawking, Leslie Ishii as Lara, Sebastian Siegel as Erik, Kevin Chapman as Mitch, Elisabeth Blake as Vanessa, William Makozak as Captain Bird, Victoria Goring as mother and Maya Henssens as young girl.

Credit: SpoilerFix.com, ABC, Lost Spoilers