Connie Bowskill has long suspected that her husband has been playing tricks on the side - after all, it’s not for nothing that he constantly goes to Cambridge to some house whose address is “crammed in” in his navigator. And now she accidentally found out that this house is for sale. Connie found a virtual tour of it on the real estate seller's website and started the video in the hope of finding some trace of her unfaithful spouse. She was shocked to see in the living room... the corpse of a woman lying on the floor in a pool of blood. But what struck Connie even more was that when she watched the video tour again, there was no longer a corpse in the living room! Not knowing what to believe - her eyes or the voice of reason - she decided, just in case, to call a friend of her friends, detective Simon Waterhouse...