Flipping through the pages of the book about the Serial Killer Dubbed "Doctor Death," I got to the section containing all my personalized notes.
A habit I formed back in the early days of my investigations was note-taking, wherein I would essentially try to find the exact point of why it all went wrong for the killer, i.e., the moment they ensured they would be captured by law enforcement.
And for Harlow, in my opinion, it was the moment he began his ploy to acquire more drugs.
Although he was an addict and had been for some years, with his drug of choice being a strong opioid pain reliever named Pethidine, he needed a way to gather copious amounts of Morphine.
The finalized idea he came up with was overprescribing terminal patients and pocketing the excess. In a sense, this was the first of many dominos that would inevitably lead to his downfall, as each time he over-prescribed patients for Morphine, he would, in turn, leave a paper trail.