Mysterious figure posing as a reporter who sabotages police work and hints at Harris's secrets. Unmasked as Harris's younger brother and the mastermind behind the Santa murders. Motivated by childhood trauma, he murders Kate, electrocutes Powell, and attacks a stripper. Ultimately survives a fatal fall and delivers a deadly Christmas gift to his brother.
Powell investigates Giles and becomes one of the killer's final victims.
Giles pursues Powell into a junkyard and electrocutes him after Powell follows him from Kate's apartment.
Giles treats Kate as an obstacle to his murders and kills her when she approaches the truth.
Giles confronts Kate in her apartment, strangles her, and stabs her after she investigates the case.
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