Karl Urban teasing S5 at SF Fan Expo

"I think we throw you in the deep end, but in a good way, because the stakes are as high as they can possibly be."

The star stressed that, "I think the real thing to look out for in season 5 on an emotional level, as far as the characters go, and your attachments to characters, there's going to be some big hits early on in the very first episode."

Urban concluded by adding, "That's probably what is going to make you realize, “Oh, this s--t is for real.” The stakes couldn't be higher, and anybody's fair game."

Source: Screenrant