'Cosby Show' Malcolm-Jamal Warner's Widow Sues His Mom, Seeks $1.2M From Family Trust

Malcolm-Jamal Warner's widow says the late 'Cosby Show' star left behind $1.2 million in broken promises when he died ... and she's suing his mother to try and collect. According to a new lawsuit, obtained by TMZ, Tenisha Warner is suing Malcolm's…