Bestselling true crime author Harold Schechter comes on the podcast to tell us the story of Belle Gunness, a Norwegian-American serial dater who had a thing for butcher’s tools. Or perhaps you know her as the author of the best dating profile line ever: “Triflers need not apply.” Belle’s story is covered at length in Schechter’s new book, Hell's Princess: The Mystery of Belle Gunness, Butcher of Men. Also discussed: why female psychopaths are more psychopathic than people give them credit for; how male serial killers are “undiscriminating”; why poisoners are worse than Jack the Ripper; and the old “meat grinder falls on head” trick.