Macon Blair stars as a soft and skittish vigilante out for revenge in the moody, stripped-down 'Blue Ruin,' about a modern-day Hatfields and McCoys-style family feud."Blue Ruin" is a moody, stripped-down action thriller with the most unlikely vigilante one could imagine. Dwight (Macon Blair) is no buffed-up hero, but a soft and skittish loner who has no idea how to hold a gun, much less use it.