Jennifer Garner Sydney Bristow Actor Victor Garber Jack Bristow Actor Ron Rifkin Arvin Sloane Actor Carl Lumbly Marcus Dixon Actor Kevin Weisman Marshall Flinkman Actor Balthazar Getty Thomas Grace Actor Rachel Nichols Rachel Gibson Actor Élodie Bouchez Renee Rienne Actor Michael Vartan Michael Vaughn Guest Star Lena Olin Irina Derevko, Laura Bristow Guest Star Ivo Nandi Bertrand Guest Star Robert Dolan Agent Barker Guest Star James Handy Arthur Devlin Guest Star Chodak Gyatso Nubpa Lama Guest Star Michael Flynn Alex Moreau Guest Star Keith Sellon-Wright Dr. Ellis Guest Star John Aylward Jeffrey Davenport Guest Star J.J. Abrams Executive Producer John Eisendrath Executive Producer Ken Olin Executive Producer Breen Frazier Writer Tucker Gates Director