Private Mallory Grennan did things in Abu Ghraib prison she didn't want to remember. After her discharge, Mal left her sins in the sand, and went home to start a new life. But some things followed her back from the desert. Guilt casts a long shadow, murder makes its mark, and violence leaves behind a stain as shocking as a bloody thumbprint. Based on the novella by Joe Hill, scripted by Jason Ciaramella, and with art by Vic Malhorta Thumbprint is a harrowing ride through war... and into the darkness that waits when the survivors return home. Also includes the original novella by Joe Hill and a bonus never-before-collected one-shot, Kodiak, also written by Hill and Ciaramella.