On the second episode of The Hills' fourth season, Stephanie Pratt invites new BFF Lauren Conrad to her birthday party.

That sounds nice and innocent enough. Lauren immediately decides to invite Doug Reinhardt, who she’s started to date.

But drama follows peeps named Pratt. Spencer and Heidi decide to roll, too, so you know serious sh!t is about to go down.

Stephanie Pratt: Caught in the middle or just plain shady?

How did the drama play out at the club - and what, if anything, happened with the ongoing feud between Audrina and Lo?

Continue reading the Scoop's episode guide to The Hills ...

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