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.
Episode rating
Cast of episode
72
12
12
2
1
- Sydney Bristow
- Julian Sark
- Michael Vaughn
- Irina Derevko
- Jack Bristow
- Arvin Sloane
- Will Tippin
- Marshall Flinkman
- Francie Calfo
- Marcus Dixon
- F.B.I. Assistant Director Kendall
- Dr. Nicholas
- Alice Williams
- Agent Chapman
- Agent Rudman
- Sark Associate
- Henry Fields
- Claus Richter
- Abigail
- Nurse #2
- Agent Grey
- Lab Technician
- Attending Nurse
- Agent on Call
- Ryokan Guard