Warning!!! Spoilers for Merlin and Trollhunters here on out! When two worlds collide, is a crossover book of two series. Merlin and Trollhunters. Jim and his friends are sent back in time to a place most know, but well forgotten in ancient time. Camelot. Where dragons, kings, and knights still ruled the earth. How will Merlin and all of his allies respond to such a rare occasion? How could they help them return back home? If they even can return. Camelot knows about Merlin's magic. Arthur never dies! (Whooo!!) Morgana is undefeated. (:() and she does not know who Emrys is fortunately. All the knights are alive, and Giaus is doing very well too.