Miami's best-dressed serial killer is back and on the prowl, at least he would be if he could shake off his permanent shadow. Ever since their paths first crossed, Sergeant Doakes hasn't let Dexter Morgan out of his sight. Dexter may well be the Miami PD's blood-spatter analyst, but Sgt. Doakes has a pretty good idea of how Dex likes to spend his free time and he's determined to catch him in the act. Dex…