Jennifer Garner Sydney Bristow Actor Victor Garber Jack Bristow Actor Ron Rifkin Arvin Sloane Actor Michael Vartan Michael Vaughn Actor Lena Olin Irina Derevko, Laura Bristow Actor Bradley Cooper Will Tippin Actor Merrin Dungey Francie Calfo Actor Carl Lumbly Marcus Dixon Actor Kevin Weisman Marshall Flinkman Actor David Anders Julian Sark Actor Terry O'Quinn F.B.I. Assistant Director Kendall Guest Star Michael Canavan Special Agent McCain Guest Star Joel Swetow Jens Guest Star Robert Joy Dr. Hans Jürgens Guest Star J.P. Romano French Guard Guest Star Kristopher Logan Garth Guest Star J.J. Abrams Executive Producer John Eisendrath Executive Producer Ken Olin Executive Producer, Director Breen Frazier Writer Crystal Nix Hines Writer