The Walking Dead's Lauren Cohan Dishes on Negan: He's "the Worst Yet"

"The hardest part of it wasn't the mystery but was the tight-lipped business . . . I think there was a consideration of really not telling people or even really pushing it a bit further. You know, Steven going on Talking Dead and pretending that it happened and stuff. Our producers decided where to draw the line in all of this, but we knew."