I don't know much about the AC victims other than Molly's story really made me sad (parents died when she was young, not much of a childhood) and that Kim's drug of choice was crack. It sounds to me like they didn't really have a common drug that they used that could potentially link them to a dealer or group of users. Or am I missing something?
What was Maureen's drug of choice? Wasn't it cocaine? IIRC, she wasn't a known heroin user.
Here is lots of info on Maureen, and yes according to "a friend" of Maureen's, Maureen did use pot and cocain:
http://www.credit.net/report_news.asp?si=200000&VendorID=200000&docid=AMX_GALEPUBALL_110221709
Maureen Brainard-Barnes was the first of the girls to disappear; she went missing on July 9, 2007, three years before Shannan Gilbert. Maureen grew up in Groton, Connecticut, a blue-collar town where the biggest employers are now the Foxwoods and Mohegan Sun casinos. Maureen filled composition books with poetry and song lyrics. She wasn't interested in material things and didn't wear makeup. In high school, she'd been a straight-A student, but she dropped out at 17 when she got pregnant. She married, got her GED, then divorced, sharing custody of her daughter, who is now 11. Maureen worked as a blackjack dealer at Foxwoods, at a ShopRite, and at a gas station. Sometime in 2006, she saw a you-can-be-a-model offer on the web and sent in pictures of herself; a friend she made in the process introduced her to escorting on Craigslist. Maureen started taking weekend trips into Manhattan, telling anyone who asked that she was going on modeling gigs. Early on, she became pregnant again with a boyfriend and briefly gave up escorting. But once the second baby arrived, she started again.
And here is autopsy info on what drugs was found in the 4 Atlantic City victims:
The toxicology reports on the 4, Nov 20 2006, Atlantic City murder victims,revealed:
Kim Raffo: large amounts of cocaine
Tracy Roberts: large amounts of cocaine
Barbara Breidor: potentially lethal dose of heroin
Molly Dilts: alcohol (no drugs)