Rose Tyler offers Torchwood's help when a young girl has been killed in Sandbrook. Alec Hardy agrees as long as she stays out of his way when they're not working - as if that's going to happen. The case is solved and after getting together for a short time, Alec breaks it off saying she's too young. Then Rose goes to tell him he has a baby daughter when he gets to Broadchurch.
Rose Tyler has met Lee Ashworth while working as a trainee hairdresser for Claire Ripley in Sandbrook. Things start to get complicated when they move to a rented house and a young girl dies while her older cousin goes missing. Alec Hardy is in charge of the case and thinks Rose knows more than she says and offers her protection by moving her to Broadchurch after starting an affair with her.
Rose Tyler met Alec Hardy the first day she went to a new school when she was just 13. Her mother had followed a boyfriend to Paisley in Scotland and said they were staying. Rose dare not speak at first but Alec was different. He became her friend, they had their first kiss at 13 but 3 years later, she was gone. This is how they found each other and fell in love again in 2012.