About Bridget
Bridget Kelly is a recovering drug addict, lead character of the series and the identical twin sister of Siobhan Martin. Her parents' names are unknown. After witnessing a murder, Bridget becomes the target of a hired assassin. After the apparent suicide of her sister Siobhan, Bridget takes her identity to protect herself, but soon she discovers that her life as Siobhan is far from safe as well.
About Andrew
Siobhan's husband, who becomes suspicious of his wife's new behavior. Andrew's behavior towards Bridget (playing Siobhan) changes during the first two episodes, although it seems as tough Andrew was not completely loyal to Siobhan.
He also is the father of Juliet and a 'friend' of Gemma and Henry.
About Ringer
Twin sisters Bridget and Siobhan (Gellar) have been at odds and find that their lives are both unraveling at the same rate. Bridget is on the run from the mob and in order to survive she takes over Siobhan's life after she mysteriously disappears. She soon discovers her estranged sister's life isn't as mundane as she had once thought.