Season 0 of Lost premiered on April 27, 2005.

Season 1 of Lost premiered on September 22, 2004.

Mysteries abound on the first season of LOST as the survivors of Oceanic Air flight 815 find themselves stranded on an unidentified island with little hope of rescue.

Season 2 of Lost premiered on September 21, 2005.

The motley crew of castaways remains stranded on the eerie deserted island populated by mysterious things that go bump in the night.

Season 3 of Lost premiered on October 4, 2006.

The castaways continue to seek strength as paranoia increases, prompting the revelation of more backstories -- and more secrets about the island.

Season 4 of Lost premiered on January 31, 2008.

Picking up from the shocking Season 3 finale, learn via "flash forwards" who from Oceanic Airlines flight 815 gets off the island.

Season 5 of Lost premiered on January 21, 2009.

Season 5 finds six survivors of Oceanic Air Flight 815 returning to civilization and wrestling with the memories of those they left behind.

Season 6 of Lost premiered on February 2, 2010.

After Season 5’s explosive finish, everything is up in the air for the survivors of flight 815. No one knows what — or who — the future will hold. Will Juliet’s sacrifice to save her friends work? Can Kate choose, once and for all, between Jack and Sawyer? Will Sun and Jin be reunited? Is it too late to save Claire? Whatever awaits everyone on the island, one thing is for certain — the moment of truth has arrived.