Brandon and Dylan are coming back to 90210!

Sort of.

Neither Jason Priestley nor Luke Pretty will be seen on this week's episode, "Model Behavior," but we'll learn from Brenda during the hour that she's been keeping in close contact with her twin brother and her ex-boyfriend.

Look for the friendship between Kelly and Brenda to soon be tested. By Dylan. Again.

Brenda will reveal some previously unknown details about Brandon's current whereabouts.

But, wait, there's more!

The following week, Dylan calls Brenda... but he ends up talking to Kelly, as well. About what? You'll have to tune in and find out!

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.