"Incarcerated men defy the odds to expose a cover-up in America's deadliest prison system," reads the logline for the HBO-backed documentary "The Alabama Solution." But that does not begin to describe this powerful and extremely necessary call-to-action.

It's a look at horrific prison conditions, detailed by prisoners on contraband cell phones, that becomes a muckraking murder mystery.

Andrew Jarecki and Charlotte Kaufman chronicle financial mismanagement, abuses of power and general inhumanities in a system allegedly designed for rehabilitation.