SIS. Word Search Puzzle Solver. SIS word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. S.I.S. or Special Investigation Squad is an elite branch of the LAPD. A new psychopath terrorizing Los Angeles proves to be their hardest case yet. This includes identifying and searching for words that are related to : Keith David, Peter Stebbings, Matt Nable, Thriller, Christina Cox, Action .