Similar Topic: Author-turned-Filmmaker Bryan Edward Hill To Adapt Reddit/NoSleep Short Story titled 'Purgatory Games'
Here is deadline's synopsis of Free Radicals:
With psychological twists and a Hitchockian flair, Free Radicals revolves around the harrowing encounter between an ailing woman (Huppert) and a young killer on the run (Wittrock).
Source: Deadline.com