When Kat Moon sees Stacey from the top of a bus in central London after 3 years thinking Stacey was living in Mexico, she enlists the help of Max Branning to find her. Eventually tracking her down to a flat in West London, she meets Luke, who is revealed to be Stacey's long-term boyfriend. However, he has no idea of Stacey's past life, including the fact she was responsible for the murder of Archie Mitchell, and believes she is called Jenny Smith. Kat pretends to be a cleaner for Luke but when he works out she is an imposter, she flees believing he will call the police. Stacey convinces Luke not to involve the police before visiting Kat, where she realises she cannot keep living a lie with Luke. After briefly fleeing, she returns to Luke, who has since discovered who she is really is from Kat. He ends things and she returns to Walford to live with Kat, but continues to leave messages for Luke in an attempt to reconcile with him. Realising he still loves Stacey, he visits Walford and meets Kat's husband, Alfie Moon. Luke is appalled when he hears that Stacey killed a man and flees, leaving Stacey heartbroken.