The star witness of the federal sex trafficking trial of the music mogul Sean Combs is expected to take the stand on Tuesday: his former girlfriend Casandra Ventura, the singer known as Cassie, who f...

Combs faces five criminal counts: one count of racketeering conspiracy; two counts of sex trafficking by force, fraud or coercion; and two counts of transportation to engage in prostitution.

If convicted, he could face a sentence of up to life in prison.