Parts Per Billion Word Search Puzzle – Search Characters, Actors and Actresses. Word Search Puzzle Solver. The interwoven stories of three couples which are forced to make life-altering decisions in the face of a disastrous war. Inspired and sometimes blinded by their love Len Mia Andy Esther Anna and Erik are as flawed and beautiful as any of the billions who are facing this human-made biological disaster. Find out the following actor, actress, character names, and other movie-related words hidden in this word search puzzle based on this movie.. This includes identifying and searching for words that are related to : Mia Diaz, Ned Vaughn, Mike Carey, Chad Morgan, Greg Cromer, Hill Harper, Joe Cipriano, Conor Leslie, Jon Prescott, Penn Badgley, Valerie Hurt, Jeff Michael, Teresa Palmer, Alexis Bledel, Stephen Sowan .