"You're with me on this, right?" "I'm right behind ya..." Focus Features has released the first official trailer for Let Him Go, a suspenseful crime drama adapted from the bestselling novel by Larry Watson. A retired sheriff and his wife, grieving over the death of their son, set out to find their only grandson. Kevin Costner and Diane Lane star as the Blackledges, who head out from their Montana ranch to find their grandson in the clutches of a dangerous family living off the grid in the Dakotas. When they discover the Weboys have no intention of letting the child go, George and Margaret are left with no choice but to fight for their family. Also starring Lesley Manville as the matriarch Blanche Weboy, plus Kayli Carter, Booboo Stewart, Jeffrey Donovan, Will Brittain, Ryan Bruce, Adam Stafford, and Bradley Stryker. Damn it looks good! This gets more and more intense as the trailer plays out.