Emmerdale S36 E224 Episode 4794 (Mon 1st Oct 2007)

Diane is shocked when Jack turns up in Margate and insists that they need to talk. Diane feels guilty when a concerned Jack asks her whether her cancer has returned and she realises she has to tell her husband the truth. Jack is deeply hurt when she admits that she had feelings for another man and he demands to know who Diane's secret love is.