Credit: Chris Walter/WireImage

Melrose Place alum Rob Estes has become the 10th cast member to join the highly anticipated Beverly Hills, 90210 spin-off this fall on The CW. He’ll play Harry Mills, the son of aging Hollywood star Tabitha (Jessica Walter) who moves back to the 90210 ZIP code with his wife Debbie (Lori Laughlin), daughter Annie (Shenae Grimes), and adopted son Dixon (Tristan Wilds).

The CW announced this week that the spin-off, titled 90210, will air on Tuesdays as a lead-in to the new Surviving the Filthy Rich, which focuses on a young woman who tutors wealthy siblings in Palm Beach (it’s based on the book How to Teach Filthy Rich Girls). Jennie Garth, a member of the original 90210, is expected to recur on the spin-off.