The File on Devlin

When Lawrence Devlin, a well-known writer, is declared missing in Afghanistan, his daughter Sally goes through his books and papers to determine if there are any clues. She tries to contact her stepmother, Elizabeth, who had refused to see her, and eventually goes to France to solicit her help in investigating Devlin's disappearance. Her father's publisher, Josh Canfield, is also involved, but as a friend or foe?