(CNN)-- Early in Michael Mann's vivid, incisive, but half-cocked gangster opus "Public Enemies," Johnny Depp's John Dillinger returns to jail a few scant months after leaving it. Only this time he ...

Director Michael Mann on the set of "Public Enemies." (Center) Johnny Depp as John Dillinger in "Public Enemies." Johnny Depp as John Dillinger in "Public Enemies." (Center) Christian Bale as ...