Sean Combs: Cassie Ventura takes the stand.

On day two of testimony, the defense cross-examines a man who took part in "freak offs" and the prosecution calls their star witness. Description: In emotional and sometimes graphic testimony, Cassie Ventura tells the jury about her relationship with Sean Combs, who she says was abusive, violent and controlling. Chloe Melas describes how Combs -- who has denied all the allegations against him -- reacted in court. To get future daily episodes of Sean Combs "On Trial" follow Dateline True Crime Weekly: https://podcasts.apple.com/us/podcast/dateline-true-crime-weekly/id1745566056 For more NBC coverage of the trial check out our newsletter, “Diddy On Trial”: NBCNews.com/Diddy