Recap of episode 21:

Mr. Eko enlists Locke to help find a secret location he believes houses answers to the island’s mysteries. Meanwhile, Jack, Sawyer, and Kate struggle to cope with the horrific situation in the hatch following the escape of “Other” Henry Gale, and of the shooting deaths of Ana-Lucia and Libby, unaware that it was Michael who is responsible.

Recap of episode 7:

Sawyer and Kate struggle to escape the island while Jack sabotages Ben’s surgery, and Juliet’s plan to make a deal with Jack to kill Ben on the operating table is exposed.

Recap of previous episode:

Forty-eight survivors of an airline flight originating from Australia, bound for the U.S., which crash-lands onto an unknown island 1000 miles off course, struggle to figure out a way to survive, why trying to find a way to be rescued.