When most people think of John Ritter, they picture the lovable, clumsy, quick-witted Jack Tripper from Three’s Company or the warm, wholesome dad from 8 Simple Rules - Hell, I'm old enough to remember when he played a young pastor on Walton's Mountain ( The Waltons ).  However, in 2002, Ritter stepped far outside his comedic comfort zone and delivered one of the most shocking guest performances in Law & Order: Special Victims Unit history. For many viewers, this episode remains one of the most unforgettable—and unsettling—twists the series ever pulled off. Ritter guest-starred in Season 3, Episode 20 (“Manhunt”), playing Dr. Richard Manning, a seemingly devoted husband whose panic and grief pull the detectives into a mysterious case involving his missing pregnant wife.  From the moment he appears on screen, Ritter disarms the audience with the same charm and vulnerability that made him a sitcom icon. That familiarity is what makes what comes next so jarring. As the inves...