Heath Ledger was urged by friends to get help during the filming of the Batman movie 'The Dark Knight' because he was too wrapped up in the character he played. The late actor became so involved it affected his mood, sleep, and relationships. A source told Fox News that on the set, "Heath refused to talk to anyone out of character. If you tried to communicate with him normally instead of The Joker, he would just ignore you. He would often come to the set to hang out even on his days off, freaking everyone out."
"Towards the end of filming, he was warned by people that he had gone too far, but it was almost like he couldn't connect with those who cared for him anymore."
Heath played the Joker in the film, which wrapped at the end of 2007 - just weeks before he was found dead from a drugs overdose in his New York apartment in January.
Sources are now reporting that Heath had been warned by many - including Jack Nicholson who had also played The Joker - not to let the movie take over his life and was urged to get psychiatric counseling but he ignored them.