Mr. and Mrs. Murder Season 1 Episode 2 A Dog's Life

Charlie and Nicola find themselves in an affluent golfing community, cleaning up the remains of former golf champion Keith Skinner who was mauled by a dog. Using an out-of-place photograph, a common dog trick and a disappearing golf hole, Nicola and Charlie uncover the murderer, however Nicola's worst fear is realised when the terrifying dog is turned onto them.