Cristian's apparent death. Natalie learns to forgive John, after realizing John had suffered a similar loss when his fiancée Caitlyn was killed 5 years prior. The Music Box Killer storyline begins, and John remains in Llanview as the lead FBI agent to solve the series of murders. The Music Box Killer is revealed to be Stephen Haver (Matthew Ashford) who is also responsible for Caitlyn's death. After discovering John's attachment to Natalie, Haver kidnaps Natalie and straps her to a bomb in John's bed, intending for her to die the way Caitlyn had died. John, with the help of Bo Buchanan (Robert S. Woods) and Rae Cummings, captures Haver and John dismantles the bomb, saving Natalie. After Haver's arrest, Asa Buchanan sneaks a gun into the Llanview Police Department "LPD", and tries to convince John to kill Haver, John refuses. The FBI is dissatisfied with John's job performance on the MBK case, in response John quits. Bo offers John the lead detective position at the LPD, but he's unsure if he should take it. Natalie tells John he should take the position, when he asks her why, she reminds him his mother moved to town. John and Natalie kiss, discuss their feelings for one another. John admits there was something between them, before Cristian died. However, both decide they are not ready to move on; the situation with Haver brought up a lot of feelings John had about Caitlyn's death. Natalie tries to get a group of John's family and friends to convince him to stay, John accepts the lead detective position. Haver, although in police custody, arranges for John to be poisoned. Natalie saves John's life when she finds John unconscious in the alley behind Rodi's and gets him help. She later helps to nurse him back to health when he returns to his hotel room. While in his hotel room, Natalie discovers mementos from John's relationship with Caitlyn when John asks her to get a shirt from the drawer where the mementos are kept. She mentions nothing. Haver arranges his own death, and frames John for the murder. Natalie maintains John's innocence, hires him an attorney Evangeline Williamson (Renée Elise Goldsberry) but charges against John are dropped after Antonio Vega (Kamar de los Reyes) finds evidence. John and Natalie, begin to heal from the loss of their loved ones. Caitlyn's sister and FBI agent, Katherine Fitzgerald, arrives in