Annie has to make a decision that could expose her work as an escort when Dixon gets arrested in connection with a fire at a sorority house. Adrianna and Silver attempt to put their past behind them, which results in disaster for Silver's relationship with Greg. Vanessa helps throw a party to re-launch Liam's bar, where the All-American Rejects perform. 8 link(s) were found on 90210 S4 Ep. 15.