With her Nut Cracker Investigations series, Katherine Ramsland injects her expertise in forensic psychology into her fiction. She consults for coroners, trains homicide investigators, and has appeared as an expert on more than 250 crime documentaries. She was an executive producer on Murder House Flip, A&E's Confession of a Serial Killer: BTK, and ID's The Serial Killer's Apprentice. The author of more than 2,000 articles and 74 books, including I Scream Man and How to Catch a Killer, she also has a Substack and pens a blog for Psychology Today.