1) Put down Fall Guy (FG) 2) Reveal Femme Fatale (FF) 3) Advance time (now blank spot on 1 because FG says to put back in hand) 4) Play new card per FF on spot 1.
Basically FG is in the spot where FF should be but this can be chained.
I had 2 Fall Guys so I could repeat this ever turn and cycle through pretty fast. Fall guy is always in hand or night 2. If I played a team, I also used this to chain push the team through with 2 fall guys.
I'm not sure I understand exactly what you mean here. The fall guy can duplicate the Femme as though it is a copy of the femme. But the fall guy stays in the hideout and you play another card immediately because for all intents and purposes you have two femme fatales this turn.
If you had two fall guys you could chain it, but there are several cards that abduct cards from players hands. Your opponents would need to hobble that engine