charlie returns following the birth of stacey's son arthur fowler. kat then learns that she had given birth to a boy along with zoe. charlie admits to kat that he knew about stacey's father, brian's, other family and that he did nothing to stop him. when an angry kat demands the truth from mo about her son, charlie suffers a heart attack. charlie manages to tell kat that he loves her, before going into cardiac arrest. the paramedics arrive minutes later, but are unable to save charlie and he is pronounced dead. alone, kat says her final goodbyes to her father before kissing him goodnight on the forehead. shortly afterwards, stacey runs away from walford, however, she has an hallucination of charlie (a symptom of her postpartum psychosis), in the form of a taxi driver who convinces her to return home.