Regina Ventura, mother to R&B singer Cassie Ventura, described screaming at Sean "Diddy" Combs after he took control of her daughter's cellphone.

In today's edition of Diddy on Trial, we break down testimony from four witnesses prosecutors called to bolster Cassie's allegations.

Kid Cudi is expected to testify in the Sean "Diddy" Combs trial about his brief relationship with Cassie Ventura and threats Combs allegedly made to blow up his car.

Grammy Awards weekend in 2010 was traumatic for Casandra "Cassie" Ventura, her longtime makeup artist Mylah Morales testified during Sean “Diddy” Combs' high-profile trial in Manhattan federal court.

Cassie Ventura screamed for someone to intervene as she was being beaten by Sean “Diddy” Combs aboard his private jet, the rapper’s former assistant testified. George Kaplan worked for Combs as an executive assistant from 2013 to 2015,

As the high profile trial of Sean “Diddy” Combs unfolds in federal court, a quiet digital drama seems to be playing out on social media that involves Cassie Ventura’s husband, Alex Fine, and how he’s possibly watching social media.

One of them is singer Cassie Ventura, who notably dated Combs off and on for years before they broke up. While the federal charges Diddy is facing don’t directly link to claims Ventura has made against him,

A legal expert told Fox News Digital that Cassie Ventura's mother Regina may prove to be a crucial witness in the federal case against Sean "Diddy" Combs.