Story : Annette has joined the traveling theater troupe, as planned, and must now get Vidocq and Desfossés out of prison. The prison warden is proud of his new alarm bell. Just this one is part of Vidocq's escape plan, but first it takes all Annette's skill to get him through a file. But then again, Inspector Flambart is there, and much more adept at figuring out what happened...