Two ladies in the local travel agent are having a bizarre 'weight loss' competition at work. One of them is a friend of Karens, who finds herself getting involved. Jack is busy heavily training with Tony. While bored at work, Rob gets an offer of moving over to CID for a couple of weeks, more money. Will he go for it? Zara is being really snappy with Ruth, but never one to give up, Ruth joins her for lunch. Zara ends up drinking way too much and confessing all.