but sergeant terry wilson was focusing on narcy.he knew he didn't have enough to charge her with her husband's death, at least not yet. she had an alibi for the assumed time of the murder. the case against her was circumstantial. so someone else must have gotten into the room and killed her husband. but who? then seemingly out of nowhere, an anonymous letter fluttered onto the desk of a detective 1,000 miles away from the crime scene. gary fetters, then an investigator in miami springs, florida, personally knew nothing of the ben novack case. and his department wasn't involved. there's people, obviously, that heard the name and knew about him, the fontainebleau and all. i wasn't one of them. i didn't know anything about it until i talked to detective wilson in new york. dennis murphy (voiceover): the letter, written in spanish, was nothing less than a blueprint to the murder, naming names, citing motivations. this is shocking. and it could be a big break. dennis murphy (voiceover): sergeant wilson, up in westchester, couldn't wait t