Article continues below advertisementKathy Griffin didn't hold back as she admitted she once "wanted to kill" her eldest brother, Kenneth, over allegations that he was a "wife-beating pedophile." Feeling "rage" over the murders of Rob and Michele Reiner, whose son Nick Reiner, who was diagnosed with schizophrenia, was arrested in connection with their deaths, Griffin used the moment to speak about how mental health and substance abuse has affected her own family in a video posted to her YouTube channel.