Zack believes that Jez isn’t his real father and decides to have a DNA test reformed to confirm his suspicions. Jez is upset after he finds out, but discovers that he shares Zack’s paternity fears. Jez ends up telling Zack that he loves him no matter what and the pair grow closer. After Josh’s behaviour starts to become increasingly erratic, Nicki urges Tom to get some professional help. Matt is concerned that he could lose Martha after he finds out that Rosie is moving away with Alex.