Laura and Tom Price lead a dream life in San Francisco with their 8-year-old daughter Serena. Laura is a TV news producer, Tom is the city's D.A, and both are devoted loving parents. Laura and Serena meet charismatic P.I Niko Jackson, who is an ex-cop with a tragic past: he was the star witness against his brother Danny, now on death row for murdering Nico's girlfriend. Out of an inauspicious beginning, Laura and Nico learn their fates are wrapped together when Laura experiences a devastating loss - and a mysterious opportunity to rewrite the future when they both ...
Laura and Nico, devastated by their failure in stopping the city's serial killer, set a trap for him that puts both of them in danger. Grace drops off a personal letter to the Price's home, and sees Serena playing with evidence from the murder scene that put her son Danny on death row. Tom becomes worried about Nico and Laura's partnership, since Tom was the attorney who convicted Nico's brother Danny. When it seems the killer may go free, Laura takes desperate measures.
Suspicious that her husband is lying to her, Laura enlists Nico's help to follow Tom, when he goes to a secret rendezvous with a woman who harbors dark intentions towards Laura and her family. After a tense standoff, Laura and Nico also discover that Tom is being blackmailed by the mysterious killer with a wrist tattoo. An old photograph turns up, showing Nico's murdered girlfriend posing with four men -- all with the same tattoo -- but which one is the killer? Nico and Laura decide to go back to Spanish Harbor to investigate how their fates are intertwined.
Nico and Laura learn the police are looking for them. Disguised, they go back to Spanish Harbor and learn the identity of one of the men in the tattoo photo, Jason Rydell -- though he's currently locked up in a psychiatric facility and impossible to reach. But Laura has a surprising contact within the institution, and manages to question Jason.... until she and Nico are attacked by military muscle. As they fight for their lives, Jason gives them a clue that leads to a shocking truth about who really killed Susanna.
From inside the psych ward where Tom has committed her against her will, Laura learns that Serena is at the TV station, and fears that her daughter will suffer the same fate if she can't get out. Nico fails to stop the killer from snatching Serena, and pursues the him but he evades capture. Laura escapes and goes to the station, where Tom is both devastated and furious that she didn't bring him the jewels so he could have stopped this. Laura asks Nico to pick up the jewels from the DNA lab, where Nico learns that this evidence could help save his brother.