After the killer strikes close to home, a twist of fate allows a Groundhog Day-type reset, and Laura relives the week prior to the string of murders. Unlike Groundhog Day, she only has one chance. Can she change fate and stop the killer? As she unravels the mysterious connection between herself and the killer, she realizes that fate is written in stone and that changing events will require an ultimate sacrifice.
Determined to prevent a murder, Laura teams up with Nico, a former cop, and they search for the serial killer's next victim. Can they save her, catch the killer and alter fate?
Laura and Nico, devastated at their failure so far in stopping the city's serial killer, set a trap for him that puts both of them in danger. Meanwhile, Tom becomes worried about Nico and Laura's partnership, since Tom was the attorney who convicted Nico's brother Danny,
While working with Nico to try to stop the serial killer she believes means to kill Serena, Laura learns more about Nico's disturbing past; Tom worries Laura will discover his secrets.
Laura thinks Tom is lying to her, so she enlists Nico to follow him; Laura and Nico return to Spanish Harbor to investigate how their fates are intertwined.
Laura and Nico take off for Spanish Harbor to track down the identity of the killer. Tom, desperate to get Serena back, sends the police after them. Also, a witness leads Nico to confront Danny, who reveals the shocking truth about Susannah's murder.
Laura convinces Nico that they need to find the fourth man from the tattoo photo; while doing so, they learn more about the case 10 years ago against Danny. Also, Laura gives Tom a chance to explain his actions and must decide whether she - and Serena - can trust him.
Betrayed by Tom, Laura learns that Serena is at the TV station and fears her daughter will suffer the same original fate. Meanwhile, Nico tries to get his hands on evidence that could help save his brother.
Tom comes to Laura with his own plan to save Serena, but a double-cross turns deadly, and the identity of the real killer is exposed. Meanwhile, with Danny's execution just hours away, Nico and Laura have to race to try saving him and Serena.
As Laura and Nico discover the reason for the vast conspiracy, they might be too late to stop fate from fulfilling its promise, as they race against the clock to try saving Serena - and Danny.
