Ringer plot
When Bridget Kelly fears for her life after promising to be an eyewitness in a murder case against her boss, she flees to New York to visit her estranged twin sister Siobhan Martin. When Siobhan mysteriously disappears, Bridget believes she has committed suicide and takes over her identity. However, she soon finds out that Siobhan's life is also not a bed of roses and that there is a price on her head.