Ringer - Season 1 - Eps 1: Pilot
On the run from the mob, Bridget assumes the identity of her deceased twin sister, Siobhan, only to realize that her sister's life was no less complicated than hers.
About Ringer

Title: Ringer
First Air Date: 2011-09-13
Last Air Date: 2012-04-17
Status: Canceled
Rating: 5.929/10 (from 113 votes)
Language: EN
Seasons: 1
Total Episodes: 22
Network: The CW
Genres: Mystery, Drama
Production Companies: Brillstein Entertainment Partners, ABC Studios, Warner Bros. Television
Synopsis
Six months after deciding to pull herself together and get sober, Bridget witnesses a murder. Realizing her life is in danger and not trusting the FBI to protect her, she runs to her wealthy twin sister, Siobhan, in New York. Things start out well—with the two patching up a fractured relationship—when Siobhan suddenly goes missing. Bridget assumes her sister's identity, but soon learns that Siobhan's life is not as perfect as it looks and she is no safer than she was before
Cast

Sarah Michelle Gellar
Bridget Kelly / Siobhan Martin

Kristoffer Polaha
Henry Butler

Ioan Gruffudd
Andrew Martin

Nestor Carbonell
Victor Machado

Zoey Deutch
Juliet Martin

Mike Colter
Malcolm Ward

Chris Elwood
Doug Cupertino

Tara Summers
Gemma Butler

Darren Pettie
Detective Jimmy Kemper

Sean Patrick Thomas
Solomon Vessida