Matt's Inside Line: Supernatural Scoop, Plus Timeless, The 100, Criminal Minds, Lucifer, Counterpart, Five-0 and More

What terror awaits Supernatural‘s Sam? What Timeless mystery did you not even know existed? Did The 100‘s Death Wave rattle relationships? Is Criminal Minds steering toward a cliffhanger? Read on for answers to those questions plus teases from other shows. GET THE INSIDE LINE!