When Erin and Danny discuss the existence of M, Erin says: "While you are at it, why don't you look for a one-armed man". Because of "The Fugitive", the "one-armed man" became a pop-culture depiction of an "unknown perpetrator" of a crime for which an innocent is accused. The reference is to the 1993 Harrison Ford movie and not the original 1963 David Janssen TV show because at the end of the scene Danny says: "I've seen the movie"