These stars set out to solve a mystery and it changed their life. Morgan Freeman was instantly drawn to methodical Det. William Summerset who tracks down a grisly serial killer in "Seven." Rene Russo bared it all to go face to face with an affluent art thief in the sexy remake of "The Thomas Crown Affair." And Australian Guy Pearce got his break in Hollywood playing idealistic Det. Ed Exley in the critically acclaimed "L.A. Confidential."