Casandra "Cassie" Ventura is taking the stand in Sean "Diddy" Combs' criminal trial, almost two years after she sued her ex-boyfriend.

As Sean "Diddy" Combs' trial unfolds in NYC, here's what to know about Cassie Ventura and other the key witnesses in the case.

I have a black eye and a fat lip,” Cassie Ventura told the courtroom in Sean “Diddy” Combs’ sex trafficking trial Wednesday, reading aloud a text she sent to Combs after a beating from the “All About The Benjamins” performer at an L.