Burly and commanding actor Tom Sizemore is heading back to TV rehab in a bid to kick his drug demons - coming face-to-face with the ex-girlfriend he's accused of assaulting, Hollywood madam Heidi Fleiss.

The Zyzzyx Rd. star has struggled with substance abuse problems for several years and was arrested on an outstanding warrant in Hollywood just last Thursday, when he was found to be in possession of narcotics.

However, he's set to tackle his problems as a cast member for the new season of VH1 reality series Celebrity Rehab With Dr. Drew - and his addition to the program has not gone down well with Fleiss.

A source tells RadarOnline.com, "(Tom) showed up wasted yesterday at the Pasadena Recovery Center and was put in 'lock down' for serious withdrawals. Heidi... went straight to her room and didn't comment."

Sizemore was convicted of assaulting Fleiss in 2003.

Image © MTV Networks

(This news article provided by World Entertainment News Network)