The Domino Principle. Word Search Puzzle Solver. The Domino Principle word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. Roy Tucker a Vietnam war veteran with excellent shooting skills is serving a long prison sentence when a mysterious visitor promises him that he will be released if he agrees to carry out a dangerous assignment. This includes identifying and searching for words that are related to : Denver Mattson, Ken Swofford, Bob Herron, Patricia Luke, Charles Horvath, Majel Barrett, Richard Widmark, Drama, Jay Novello, Neva Patterson, Thriller, Ted Gehring, Mickey Rooney, Gene Hackman, Farnesio de Bernal .