Kasey Jordan, an adult film star, says the scariest moment she’s had with Charlie Sheen was when she saw him using an excessive amount of drugs at a party earlier this year.

Kasey was one of the five women invited to Sheen’s Beverly Hills home in January where she says she witnessed a night of heavy drinking, cocaine use and adult film watching by Sheen.

“I’ve never seen anybody consume as much alcohol and cocaine,” the actress stated.

Dr. Drew asks Kasey if his behavior became out of control as a result of the drug abuse and why she was there knowing of his history of violence.

Hear Kasey and Dr. Drew discuss these questions and more in the video clip above and be sure to continue watching Dr. Drew's nightly show on HLN at 9 p.m. ET/PT.