From left: Charisma Carpenter, Sarah Michelle Gellar and Joss Whedon. Whedon drew criticism about his abusive behaviour from actors who worked with him on 'Buffy the Vampire Slayer'. AP Photo
From left: Charisma Carpenter, Sarah Michelle Gellar and Joss Whedon. Whedon drew criticism about his abusive behaviour from actors who worked with him on 'Buffy the Vampire Slayer'. AP Photo

What happened with Joss Whedon of 'Buffy the Vampire Slayer'? Why the show's stars are speaking out against the director