The Oscar winner arrived at the court room with fiance David Otunga and was the first witness called to the stand. She testified against William Balfour, who is accused of killing Hudsons family in 2008. Balfour used to be married to Jennifers sister, Julia Hudson, and prosecutors say he thought a balloon gift delivered to the home was from Julias new boyfriend. So, he went into a blind rage killing everyone in the house, Hudsons mother, brother and seven year old nephew..