Berkeley, California, 1933. In a lab filled with curiosities - beakers, microscopes, Bunsen burners, and hundreds upon hundreds of books - sat an investigator who would go on to crack at least 2,000 cases in his 40-year career. Known as the "American Sherlock Holmes", Edward Oscar Heinrich was one of America's greatest - and first - forensic scientists, with an uncanny knack for finding clues, establishing evidence, and deducing answers with a skill that seemed almost supernatural.

Edward Rulloff was a brilliant yet utterly amoral murderer—some have called him a “Victorian-era Hannibal Lecter”—whose crimes spanned decades and whose victims were chosen out of revenge, out of envy, and sometimes out of necessity.

Fifty years ago, a serial killer prowled the quiet city of London, Ontario, marking it as his hunting grounds. As young women and boys were abducted, raped, and murdered, residents of the area held their loved ones closer and closer, terrified of the monster - or monsters - stalking the streets. Homicide detective Dennis Alsop began hunting the killer in the 1960s, and he didn’t stop searching until his death 40 years later.

For more than a century, some of the world’s most important thinkers and leaders—men like Arthur Conan Doyle and William Butler Yeats—gathered once a month and discussed the supernatural at The Ghost Club in London. In the early 1900s the club's chairman was Harry Price, the world’s most well-known ghost hunter. He and other members, like Harry Houdini, sought to debunk the charlatans who preyed on vulnerable people with fake seances, tarot readings, and spiritual encounters.

I order another bourbon, neat. This is the drink that will flip the switch. I don’t even know how I got here, to this place, to this point. Something is happening to me lately. I’m drinking too much. My sheets are soaking wet when I wake up from nightmares of decaying corpses. I order another drink and swig it, trying to forget about the latest case I can’t shake. Crime solving for me is more complex than the challenge of the hunt, or the process of piecing together a scientific puzzle. The thought of good people suffering drives me to the point of obsession.