Confirmed: Shannen Doherty Not Done with 90210!
The last time we saw Brenda Walsh on 90210, she was leaving a party with Ryan.
After that, Kelly - with whom Brenda had been crashing - left for a couple weeks to track down Dylan... and viewers weren't exactly told about the whereabouts of Brandon's twin sister.
Fortunately, this unsatisfactory story line hasn't reached its conclusion yet: The Los Angeles Times confirms that Doherty is set to return to the zip code that made her famous. Look for her on this season's 11th and 12th episodes.