As teased on the 2010 finale, 90210 fans have not seen the last of Mr. Cannon.

More importantly, neither has Naomi nor Silver.

Giving away a major storyline from the show's return episode, "Liars," The CW has released the following promotional video. Warning: do not watch if you wish to be surprised by Mr. Cannon's actions on the first installment of the new year...

Also expected to take place on the 1/24/11 episode:

• Dixon confronts Teddy about his kiss with Ian.
• Dixon and Annie's cousin from Kansas shows up.
• Navid and Silver continue to hook up in secret.

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