In January 2020, Rhona is devastated to learn that Graham has been murdered and quickly suspects Kim to be the perpetrator - most notably after learning that Kim wanted Graham dead. She soon begins to doubt her theories on Kim, however, when Rhona learns that Pierce has been released from prison not long ago. Eventually, Rhona deduces that Pierce killed Graham upon learning that her ex-husband has been stalking her ever since he had been released from prison. Moreover, Pierce has kidnapped Vanessa and Johnny to force Rhona to meet him face-to-face - and she does so after finding out about the situation. When Rhona meets Pierce face-to-face for the first time since before he went to prison two years ago, she secretly records him admit to killing Graham - all the while the recording is being streamed live in front of Paddy and the other punters in The Woolpack. Paddy instantly phones the police just as Pierce knocks out Kim, after the latter arrived to help Rhona extract proof about the culprit behind Graham's murder. When the police arrive moments later, Pierce prevents Rhona from escaping and attempts to rape her again; however, she fights back by injecting an animal needle on Pierce to subdue him. As Pierce lies helpless and injured, Rhona lectures him for what he put her through by raping her and killing Graham. The police then besiege the building and Pierce, after being identified by his ex-wife as Graham's killer, is arrested for murder and kidnap; he is later charged for his crimes and consequently jailed once more, thus allowing Rhona to finally lay Pierce to rest from her life. Her efforts to move on from Graham become troubled when Kim arranges for his funeral to proceed without Rhona's knowledge, which restarts their conflict in the process. Rhona then learns that Graham left her a lot of money in his will and not Kim. She decides to keep it and use it to help Moira with her farming troubles, much to Kim's frustration.