Let's leave aside the reason Julie gave for having the sleeping pills in her possession (I would have told her Siberian ginseng worked better for me but then I wasn't an insomniac), but I can't help but compare this to the Lizzie Borden case (though Julie is far prettier I'm sure David will dredge up some physical resemblance). The reason I bring up the Falls River, Massachusetts murders in 1892 was that Ms. Borden had attempted to buy prussic acid the day before the murders, but at trial this was deemed inadmissible because it was too remote from the actual manner of deaths (bludgeoning with a hatchet) and I can't see how it would be relevant in the Bamber case either.
Given that both Lizzie and Jeremy lived in a dysfunctional family, they both had a history of minor theft and stealing from their family, they both felt as if the world was passing them by and there was the temptation of a large inheritance upon their parents' demise, I'm surprised the parallels haven't been remarked upon heretofore.
Of course Lizzie Borden got off..