A railway worker's £300,000 personal injury claim for a broken thumb hits the buffers when undercover filming proves he is taking his insurers for a ride, and a fraudulent claim for a mobile phone lost in a river sinks like a stone when the handset resurfaces in a recycling shop. Metadata embedded in a photo is the undoing of a woman whose claim for almost £2,000 worth of stolen make-up turns out to be made up. A dog owner is caught attempting to take out a policy on a puppy after it has been injured, and black box technology fitted to a car reveals what really happened in an elaborate crash for cash con.