After a breakup, teacher Laura Nielson agrees to go out with the father of one of her students. The next day, their memories of the date differ hugely.
Laura's post leaves Andrew rattled and his reputation damaged. As the police look into his ex-wife's death, Laura conducts an investigation of her own.
Andrew receives a visitor who could clear his name. Laura realizes she must meet with Andrew to ask for help with Luke's girlfriend.
Laura travels to Edinburgh to find answers about Andrew's past. Andrew launches a defamation lawsuit — but his desire for vengeance doesn't stop there.
As Laura gets closer to Tom on her quest to bring Andrew to justice, she finds an unexpected item in his car. Vanessa visits the hospital.
Three months down the line, Laura tries to move on with her life. But as Andrew enlists Luke's help with his alibi, the two go head-to-head once more.
After a body turns up in the marshes, the death is declared a murder. Laura and her new boyfriend, Ian, come under suspicion.
Laura learns some disconcerting news about Ian's past from Vanessa. Details about Andrew's interactions on that fateful night become clear.
Amid nightmares about Andrew and pressure from the media, Laura talks to Winnie and Vanessa about Carl's potential involvement in the murder.
Karen and Rory make a grim discovery. Katy fills Liam in on Laura's troubled family history. In the past, Andrew meets Ollie for the first time.
More evidence appears to implicate Laura in the murder. Ollie asks Luke to meet with him, and Karen receives disturbing news about her ex.
The police make another arrest in connection with the murder — but is justice going to be delivered, or will the killer walk free?