Heath Ledger was working on his directorial debut before death

Heath Ledger was working on his dream directorial debut before the actor passed away.

"I Am Heath Ledger", the documentary based on the life of "The Dark Knight" star sheds light on his ambition to direct a feature film, reported Elle magazine.

Ledger, who was a chess fanatic, wanted his first directorial venture to be titled as "The Queen's Gambit".

The story of the film was based on the novel by Walter Tevis about a chess prodigy who develops a reliance on drugs and alcohol.

Ledger died of cardiac arrest brought about by combined drug intoxication on January 22, 2008.
 

"I Am Heath Ledger" will receive a digital release on May 23.