Upon arrival in Boston, Mass., they both put off seeking out the Arthur's Chosen, not wanting to end the trip and the romance that has developed between them. Sara however is captured by the Arthur's Chosen shortly after, brought to a warehouse and forced to give them some of her blood, which they need to resurrect King Arthur through Black Magic. Derek barges into the warehouse, after having been warned by Antonia that he will die if he enters the warehouse. The Arthur's Chosen release Sara after draining some of her blood and start working on the resurrection, which they can't finish however, because Derik and Sara interfere. The interrupted spell sets free a demon who immediately starts to kill everyone, and would - as Sara sees in a vision - have extinguished all life on earth. After the demon has killed all of the Arthur's Chosen, he severely wounds Derik, breaking his neck, but is attacked by Sara, who, in another nearly-impossible lucky event kills it by simply kicking it with her foot, thus saving the world.
