Spoiler: 90210 - "It doesn't make sense because Silver wasn't making sense"

This week's episode picks up right where it left off last week and we do get some answers about Silver's actions. Here is what happened.

Silver runs from Mr. Matthews' house and causes everyone to worry about her. Everyone - Mr. and Mrs. Wilson, Kelly, Ryan, Adrianna, Naomi - jumps to the conclusion that she is on drugs and that is why she is acting out. They even organize a search party, all splitting up, to look for her: "We have to find her before she hurts someone or herself." Silver calls Dixon and freaks him out by saying stuff like without you my life is not worth living. Instead of trying to find out where she is, Dixon is so bewildered that he simply hangs up on her. Dixon then retreats and begins to give off an air of carelessness; He no longer cares whether or not she is OK, he instead thinks she is playing a game. Silver's car is found abandoned in a parking lot by the police and the only clue anyone has to work with is that Silver told Dixon she was going to "the source." Silver shows up at the train station and we find out her plan is to go to Kansas, where Dixon is from, in an attempt to better understand him. A stranger, who at first seemed to be stealing Silver's things while she slept, ended up helping her by taking her cell phone and calling the last number she called, which happened to be Dixon's phone. Knowing she is at the train station, they get there in time to see Silver miss the train to Kansas and run onto the train tracks. Dixon realizes he has to talk Silver off the tracks. It is also in this moment when he realizes what is wrong with Silver - she is manic depressive. The reason he knows Silver is bipolar is because his birth mother also suffered from the disease. Dixon promises to get Silver help and in that moment she allows herself to be helped.

In other, less dramatic news:
- Annie and Ethan, at the end of the last episode, were discussing the possibility of breaking up. While together and looking for Silver, Annie freaks out and tells him they can't break up. She says she made sacrifices for him and if he is no longer in the picture than everything she did would have been mean hearted. In the end, their break up becomes official, but the good news that stems from this is that things between Annie and Naomi seem to be looking up. Now that Ethan is out of the picture, they are allowed to be friends again.
- Ryan apologizes to Kelly for sleeping with Brenda and admitted he did it as punishment for her. They may be on the road to again being friends also.
- While everyone was out searching for Silver, Navid and Adrianna stayed at Kelly's house watching her son. At the beginning of the episode Adrianna tells Navid that she is leaning toward giving up her baby for adoption mostly because she has no idea how to be a parent. But after having to take care of Kelly's son and doing a pretty good job Adrianna admits that it was kind of fun and Navid points out that they make a good team. If Adrianna chose to keep the baby, I know Navid would be there to help and support her 100 percent.
- The Wilsons, after a minor freak out where Deb yelled about how Beverly Hills is a bad influence on the kids, decides she likes the multitude of choices available in California and agrees to make their new home permanent. The possibility of moving back to Kansas is no longer there.

I like how they used this episode as a way to teach teenagers and young adults about bipolar disorder. After the episode, Jessica Stroup, who plays Silver, made a public service announcement about the disease and talked about how people with it can live full lives with medical support.

As for previews, next week is the return of Tori Spelling and it was also shown that Dixon goes searching for his birth mother. Are you excited for Spelling's return to the show? If you are not a fan, does this make you want to watch? And about tonight's episode, did you enjoy it? I suspected they were going for a bipolar storyline after last week, but I do think they did it well. Let me know your thoughts too.