In 2007 Walger was cast in Cynthia Mort's critically acclaimed HBO series TELL ME YOU LOVE ME opposite Adam Scott. She starred in 2004's THE LIBRARIAN: QUEST FOR THE SPEAR, and earned her first Saturn Award nomination in the category of Best Supporting Actress on Television. She also starred opposite Mike Binder in THE MIND OF THE MARRIED MAN for HBO.
Sonya was born and raised in London and studied at Oxford University. She currently lives in Los Angeles.