Sean "Diddy" Combs' lawyers will question R&B singer Casandra Ventura, known as Cassie, for the first time in his sex-trafficking trial Cassie is the prosecution's key witness and has testified graphic details of alleged sexual and physical abuse at the hands of Combs

After answering questions from the prosecution for two days, Cassie Ventura faced a tougher interrogation Thursday under cross-examination from Sean “Diddy” Combs’ legal team.