Irina Derevko is a former Russian spy and also the mother of Sydney.
Appearances
Alias
Main cast, played by Lena Olin
- Episode 2x01: The Enemy Walks In (Sep 29, 2002)
- Episode 2x02: Trust Me (Oct 6, 2002)
- Episode 2x03: Cipher (Oct 13, 2002)
- Episode 2x04: Dead Drop (Oct 20, 2002)
- Episode 2x05: The Indicator (Nov 3, 2002)
- Episode 2x06: Salvation (Nov 10, 2002)
- Episode 2x07: The Counteragent (Nov 17, 2002)
- Episode 2x08: Passage (Part 1) (Dec 1, 2002)
- Episode 2x09: Passage (Part 2) (Dec 8, 2002)
- Episode 2x10: The Abduction (Dec 15, 2002)
- Episode 2x11: A Higher Echelon (Jan 5, 2003)
- Episode 2x12: The Getaway (Jan 12, 2003)
- Episode 2x15: A Free Agent (Feb 9, 2003)
- Episode 2x16: Firebomb (Feb 23, 2003)
- Episode 2x17: A Dark Turn (Mar 2, 2003)
- Episode 2x18: Truth Takes Time (Mar 16, 2003)
- Episode 2x19: Endgame (Mar 30, 2003)
- Episode 2x20: Countdown (Apr 27, 2003)
- Episode 2x21: Second Double (May 4, 2003)
- Episode 2x22: The Telling (May 4, 2003)
Guest cast, played by Lena Olin
- Episode 4x21: Search and Rescue (May 18, 2005)
- Episode 4x22: Before the Flood (May 25, 2005)
- Episode 5x09: The Horizon (Dec 14, 2005)
- Episode 5x11: Maternal Instinct (Apr 19, 2006)
- Episode 5x17: All the Time in the World (May 22, 2006)