If there's a new true crime documentary with an interesting angle, I'm gonna find a way to watch it, and sure enough, I'll be adding HBO's four-part docuseries Murder on Middle Beach to my list. The series hails from first-time filmmaker Madison Hamburg, and it presents his complicated journey as a young man determined to solve an unspeakable crime and absolve the people he loves, while looking for answers within his fractured family and community. On March 3, 2010, single mother Barbara Hamburg was found violently murdered near her home in the upper middle …