Sean "Diddy" Combs' lawyers have spent the day questioning R&B singer Casandra Ventura, known as Cassie, for the first time in his sex-trafficking trial Warning: Readers may find some details distressing Cassie is the prosecution's key witness and has testified over three days with graphic details of alleged sexual and physical abuse at the hands of Combs Defence lawyers have tried to poke holes in Cassie's testimony, which is likely to continue for much of Friday Thejudge vented "in what universe..." at Diddy's lawyerswhen they suggested the eight-months pregnant Cassie may need to testify into next week Combs faces charges of racketeering, sex trafficking and transportation to engage in prostitution The 55-year-old denies all charges. If found guilty, he could spend the rest of his life in prison Listen to theBBC's Diddy on Trial podcast 'In what universe...': Diddy lawyer's request to keep Cassie Ventura on stand riles judge