Brenda [to Kelly]: You're never gonna be happy with someone else because you're still in love with Dylan - and you know it!

90210 tried to fool us, didn't it? Kelly mentioned that Brandon called at 3 a.m. one night; Sammy has curly blonde hair, just like a certain ex-boyfriend.

In the end, though, the father of Kelly's father proved to be the number-one suspect all along: Dylan McKay. Now, of course, the Luke Perry guest star watch begins!

This wasn't the only development on "The Bubble," however. A trio of other relationships took steps in interesting directions. Read through our detailed episode guide now for a complete run-down.

Did Dixon give Annie good advice regarding her choice of Ethan or Ty? Chime in now on our 90210 forum!

Thanks for reading. Remember to come back tomorrow for detailed 90210 quotes, pics and music from this episode!

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