Episode 43 of "Alias"
s02e21 Second Double
Title: Second Double
Original Air Date: 05/04/2003 on ABC
Director: Ken Olin
Writer: Crystal Nix Hines
Guest Stars: Joel Swetow (Jens), Kristopher Logan (Garth), J. P. Romano (French Guard No. 1), Robert Joy (Hans Jurgen), Paul Keeley (Police Officer #1), Michael Canavan (Special Agent McCain), Michael Yama (Chinese Yama), Jonathan Dixon (CIA Agent (credited (Jon Dixon))
Plot Outline:
Sydney begins to question Will's identity when he's arrested for espionage, under suspicion of being a double. Meanwhile Sark and Irina plot to recover the Rambaldi heart, and Sloane makes Jack a business proposal.