ABC airs the 25th episode of the J.J. Abrams-produced series Lost. The second season premiere introduces Henry Ian Cusick as Desmond. Anson Mount (Inhumans, Star Trek: Strange New Worlds) guest stars. 
ABC airs the 25th episode of the J.J. Abrams-produced series Lost. The second season premiere introduces Henry Ian Cusick as Desmond. Anson Mount (Inhumans, Star Trek: Strange New Worlds) guest stars.
ABC airs the 26th episode of the J.J. Abrams-produced series Lost. Henry Ian Cusick, Adewale Akinnuoye-Agbaje, and Saul Rubinek guest star.
ABC airs the 27th episode of the J.J. Abrams-produced series Lost. Henry Ian Cusick, Adewale Akinnuoye-Agbaje, and Katey Sagal (Married With Children) guest star; this episode introduces the Dharma Initiative to the series’ mysterious backstory.
ABC airs the 28th episode of the J.J. Abrams-produced series Lost. Adewale Akinnuoye-Agbaje and Cynthia Watros become series regulars; DJ Qualls guest stars.
ABC airs the 29th episode of the J.J. Abrams-produced series Lost.
ABC airs the 30th episode of the J.J. Abrams-produced series Lost. Malcolm David Kelley guest stars as Walt.
ABC airs the 31st episode of the J.J. Abrams-produced series Lost. Brett Cullen guest stars.
ABC airs the 32nd episode of the J.J. Abrams-produced series Lost. Francois Chau guest stars.
ABC airs the 33rd episode of the J.J. Abrams-produced series Lost. Frederic Lane guest stars.
ABC airs the 34th episode of the J.J. Abrams-produced series Lost.
ABC airs the 35th episode of the J.J. Abrams-produced series Lost. M.C. Gainey guest stars.
ABC airs the 36th episode of the J.J. Abrams-produced series Lost. Neil Hopkins guest stars.
ABC airs the 37th episode of the J.J. Abrams-produced series Lost. Kim Dickens guest stars.
ABC airs the 38th episode of the J.J. Abrams-produced series Lost. Mira Furlan (Babylon 5), Clancy Brown (Highlander, Earth 2) and Michael Emerson guest star.
ABC airs the 39th episode of the J.J. Abrams-produced series Lost. Mira Furlan (Babylon 5) and Michael Emerson guest star.
ABC airs the 40th episode of the J.J. Abrams-produced series Lost. Michael Emerson guest stars.
ABC airs the 41st episode of the J.J. Abrams-produced series Lost. Katey Sagal (Married With Children) and Michael Emerson guest star. Freeze-frame analysis of the episode’s mysterious map becomes a minor internet phenomenon in the wake of this episode’s broadcast.
ABC airs the 42nd episode of the J.J. Abrams-produced series Lost. Bruce Davison (Harry And The Hendersons, X-Men) and Michael Emerson guest star.
ABC airs the 43rd episode of the J.J. Abrams-produced series Lost. Wayne Pygram (Farscape) and Michael Emerson guest star.
ABC airs the 44th episode of the J.J. Abrams-produced series Lost. Michael Emerson guest stars.
ABC airs the 45th episode of the J.J. Abrams-produced series Lost.
ABC airs the 46th episode of the J.J. Abrams-produced series Lost. Malcolm David Kelley guest stars as Walt.
ABC airs the 47th episode of the J.J. Abrams-produced series Lost, bringing the second season to a cryptic close. Malcolm David Kelley, Michael Emerson, Clancy Brown, and Alan Dale (Angel, Torchwood) guest star.