Following a month-long hiatus, 90210 returns with a new episode this Monday.

On the installment titled "Hello, Goodbye, Amen," Harry's son Sean shows his shady side, while Kelly and Brenda finally have it out.

Here are a couple of clips from the episode:

[video url="/videos/hello-goodbye-amen-clips/" title="Hello, Goodbye, Amen Clips"] [/video]

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