
One of the challenges for the thriller writer who takes on the catch-the-serial-killer subgenre is the ever escalating ante, one author’s diabolically perverse criminal demanding the next’s invention of a murderer just that much more diabolical and perverse. perfectly symmetrical.” She has “wide cheekbones, a long sculpted nose, a heart-shaped face” and a “long, aristocratic neck.” So overwhelming are Gretchen’s charms that Archie Sheridan, the police detective she tortured to death and then revived, still fantasizes about her, slipping his fingers inside his shirt when no one’s looking to trace the valentine-shaped scar she carved into his chest with an X-Acto knife.

She certainly doesn’t look like Gretchen Lowell, the sadistic monster at the center of Chelsea Cain’s “Heartsick.” Blond Gretchen’s eyes are “large and pale blue and her features. Granted, mug shots don’t command the services of stylists and makeup artists, and the lighting down at the precinct is probably fluorescent, but the average female serial killer is no drop-dead beauty.
