Boston Quackie (Daffy Duck) is an American agent in Paris assigned to guard the valuable secret contents of a briefcase. A man in a green hat steals the briefcase and leads Quackie on a chase aboard the Cloak and Dagger Express.
| Actor | Role |
|---|---|
 Mel BlancBoston Quackie (Daffy) / Inspector Faraway (Porky) (voice) | Boston Quackie (Daffy) / Inspector Faraway (Porky) (voice) |
 June ForayMary (voice) (uncredited) | Mary (voice) (uncredited) |