I thought it would dissect the slenderman stabbing case in a broader fashion. At many times it seemed this film was presenting the case for the defense of the perpetrators of the crime. Also it just didn't feel right how the victim was completely overlooked, except to reiterate she didn't die. I was hoping more from an HBO production.
A cautionary tale of the effect of the darkweb on impressionable youth (for example: CreepyPasta horror stories) which lacks the critical evaluation required for a world-class documentary but exposits the dangerous cult phenomena of 'Slenderman' and its sociological effect with depth and detail. In addition, I'm surprised how much access to interrogation footage Brodsky had. Does our fascination make us voyeurs?