With Josh Griffith and Dena Higley's work officially hitting the screen beginning with the Wednesday, August 19 episode, fans of NBC's "Days of our Lives" are in for a daring ride with the return of Stephen Nichols as Steve "Patch" Johnson and the beginning of a serial killer storyline. The first victim? Serena Mason (Melissa Archer). But did Chad DiMera (Billy Flynn) have something to do with her death?