Forensic pathologist Professor Sam Ryan has always delved into the past lives of the corpse she examines. But the discovery of her long-lost son confirms that that it's time to confront her own past -and her future -and move on. Harry and Leo are her obvious successors, but what will they make of new recruit Nikki Alexander? The upheaval of Sam's departure doesn't mean there are fewer cases landing on their desks -it's now up to them to preserve her ethos that every corpse deserves to have it's story told.