Casandra “Cassie” Ventura is expected to take the stand in her ex Sean “Diddy” Combs Manhattan sex-trafficking trial on Tuesday, with testimony that’s poised to be a tell-all accounting of his alleged pattern of abuse. Here’s what to know.

Sean "Diddy" Combs used fame and violence to sexually abuse women, prosecutors have said in opening statements at the hip-hop mogul's trial, while the rapper's attorneys defended his "swinger" lifestyle. The 55-year-old has pleaded not guilty to charges including racketeering, sex trafficking and transportation to engage in prostitution.