(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 ...

Now, Hollywood shape-shifter Johnny Depp is back as another unexpectedly charismatic outlaw: Depression-era bank robber John Dillinger, a character he says he's been drawn to since he was a boy.