And a Child Shall Lead

Leading aircraft designer, Robert Phelps, is abducted by foreign agents to the horror of his mentally challenged son, Bobby. Hawke decides to try and find Phelps, obtaining leads from Bobby, whose autism gives him the ability to draw detailed clues from memory. While in the agent's custody, Phelps has a sudden heart-attack and is rendered useless to them. Hawke has to find him for Bobby.