Dig — Walter Rice

A man can't stop digging holes in the ground and doesn't know why -- until at last he comes face to face with deadly secrets. Jim Lassiter is an intelligent guy who makes his living writing software, but he becomes obsessed with digging, and he just keeps on digging It's insane. Or maybe not. Something traumatic happened to him nine years earlier. He can't remember what. So he keeps digging until he finds the truth. Then he's in real trouble. He could use some help. Grab a shovel