But she told the court last week that when Combs learned of their relationship, he lunged at her with a corkscrew and kicked her in the back. On May 22, jurors heard Mescudi's recollection of Combs' alleged abuse.

Prosecutors are aiming to fill in the picture of the mogul’s relationship with Casandra Ventura by questioning his former assistant and Ms. Ventura’s mother.

After four days of searing testimony by Ms. Ventura about a pattern of physical abuse and drug-fueled voyeuristic sex marathons with male prostitutes, the government has lined up a series of witnesse...