The government calls Cassandra Ventura.” With those five words, the prosecution dove into the heart of the racketeering and sex trafficking case against Sean “Diddy” Combs – the testimony of his former longtime girlfriend.

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

The 55-year-old hip-hop mogul has been charged by federal prosecutors with sex trafficking, racketeering conspiracy and transportation to engage in prostitution.