Episode 4: Cathy is excited to take Cat and Callum to help Auntie Dawn with lambing season on her farm, but the special trip seems ruined when Tess turns up with an unwelcome visitor. The fallout from Cathy's date with Eamon Hammond leads to a rift between the sisters. Will Marcus see an opportunity to win back his ex-fiancée, or will he be too distracted by his attempts to out-man Callum?