As Vaughn's life hangs in the balance, Sydney has no choice but to turn to Sark for help in securing an antidote for the virus. But when Sark demands She help him to kill Arvin Sloane in exchange for his assistance, Sydney faces a decision that could expose her as a double agent.
Did You Know?
Jack tells Sydney he's giving her an H&K P11 5-shot underwater dart pistol, but the weapon he holds up is a normal semi-automatic pistol with a suppressor attached to the barrel, looking nothing like a real P11. See more
How do you say thank you to the woman who killed your father?
Written by J.J. Abrams
Performed by Michael Giacchino See more