Dennis Nilsen was a serial killer active from 1978-1983. During that time, he preyed on young men and boys in London, murdering at least 12, but potentially as many as 16. All of his murders were committed at one of two homes where he lived. Nilsen was known to strangle his victims, and sometimes drown them, before ritualistically bathing them and keeping them in his home for periods of time. When he finished with them he’d burn their bodies and flush them down the toilet. Nilsen was caught in 1983. Nilsen was also known as the Kindly Killer and the Muswell Hill Murderer.