AceShowbiz -

Pauley Perrette had a scary encounter with "a very psychotic homeless man." The "NCIS: Naval Criminal Investigative Service" star told her Twitter followers that she was attacked near her house in Hollywood. "I was alone, terrified, and trapped," she said.

"He grabbed me so forcefully, pinned my arm, punched me in the nose, forehead repeatedly telling me he was going to kill me," the actress wrote. "There was an empty garage behind me and I knew if he got me in there I was dead. I knew I couldn't overcome him."

After she got away, Perrette went into shock and collapsed on the sidewalk. "Some guy walked right past me with a dog that licked my face. He was on his phone, annoyed. Did nothing," She claimed. She then contacted her friend for help. The man was finally arrested on felony assault.

"I am shaken and traumatized. My house, my beloved Hollywood. My beloved homeless people that I spend my life protecting. My life changed tonight," she added. "We need full mental health care. We need housing and help for the homeless. We need to support our cops. We need to not walk alone. I need to heal. I almost died tonight."

So, tonight was awful, life changing and I'm only grateful to be alive. It's here: pic.twitter.com/vXIT1pkVRc

— Pauley Perrette (@PauleyP) November 13, 2015