Actress Molly Ringwald will make her first television appearance in four years as a guest-star on NBC's supernatural drama Medium episode "The Darkness is Light Enough" (Monday, May 1st at 10 PM ET/PT).

"I've been a fan of both Glenn's and Patricia's work for a long time," said Ringwald. "I am thrilled to have the opportunity to work with them as well as the entire cast of Medium." "I can't tell you how excited we are to have Molly Ringwald join us for this episode," said the show's creator and executive producer, Glenn Gordon Caron. "She is someone whose work I've long admired and I was thrilled when she agreed to do it. We don't often reach out to 'special guest stars' on Medium...but as anyone who watches the episode will come to understand, this is just a perfect marriage of actor and material."

In this episode, full of suspense and unexpected twists and turns, Allison (Emmy-winner Patricia Arquette) has visions of a faceless man who repeatedly breaks into the home of Ringwald's character, Kathleen Walsh, but who leaves her unharmed and steals only a kiss. As Allison digs deeper, it becomes a race against time as she uncovers information that leads her to believe that Kathleen's life is in grave danger.