Arthur Downey was the extremely controlling husband of Rebecca Downey. He tracked Rebecca down to a remote mountain area after she left him and found her with Shane Donovan. Both of them assumed that he died in a fight that ensued, but in reality, he was able to get back to his life in Chicago. Eventually Rebecca was cleared of his murder, just in time for there to be a real murder. David Renfro, a former business partner of Arthur's who was also a member of the FBI, wanted revenge against Arthur for something that happened long ago, and killed him.