 Lumen Pierce is first seen after witnessing Dexter kill Boyd Fowler, a serial killer who had been keeping her captive.Despite Lumen being a witness to the murder and a clear threat to Dexter, due to her not fitting Dexter's code by being innocent, he is morally obligated to keep her alive and locks her up in a secluded area to give himself time to decide what to do with her.At first, Lumen is petrified of Dexter, believing that he will kill her for being a witness to his crime.