Sue's Wrist and Thumb Injured in a Boat Attack

Police had been viewing sue with suspicion from the outset of the investigation. Sue injured her wrist and thumb some time between having lunch with anne and when she was interviewed in the wake of bob's disappearance less than 24 hours later. She either bludgeon or starved bob to death before using ropes and a winch to transport his body out of the saloon, on to the deck and into the dinghy. From there, she used a heavy object, most likely the yacht's fire extinguisher, to weigh bob's body down and throw him overboard.