In “Crimson Reign,” Abigail Martin’s parents fall victim to a serial killer obsessed with the vampire saga she once loved, prompting her to assume a new identity as Vera MacIntrye. As she tries to navigate her new life, she finds herself irresistibly drawn to her off-limits teacher, Tad Knightley, and when the murderer gets closer to Vera, Tad will do whatever it takes to save her, even at the cost of his dream job.