Clues to Ledger's mental state in video and final interview

An eerie video featuring Heath Ledger "drowning" himself is offering a few clues into the actor's mental state.

The black and white film, which Ledger shot and screened at the Bumbershoot festival in Seattle, Washington last year, featured the troubled actor committing suicide to the soundtrack of tragic singer-songwriter Nick Drake's 'Black Eyed Dog'.