Guest Stars Leslie Silva as M.E. Ridenhour John Cariani as Otto Bahnhoff John Michael Higgins as Floyd Mayborne Thomas Kopache as Officer David Rees Snell as Herb Moore Silas Weir Mitchell as Darren Drew Sam Lloyd as Group Leader Jennifer Elise Cox as Hobbyist Laura Heisler as Cynthia Abbott Co Starring Larry Herron as Technician