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The Broadway production of 13 was 90 minutes long. 90. Minutes. Long. But still, crazy teenagers come up with theories.
Kendra and Brett will end up being a On and off coupleSeriously, the musical has enough evidence. Eventually, Brett will realize that Lucy lied to him, and go back to Kendra. Lucy will manipulate the situation, and Brett will go back to her.
Archie and Lucy are cousinsLucy and Archie are both very manipulative. It makes sense that they would be related. It wasn't mentioned in the musical because everyone already knew, and Evan, being the New Transfer Student wasn't told. Plus Lucy wouldn't want to admit that she's related to the loser cripple kid. This is why Archie helped Evan get Brett and Kendra back together despite his crush on Kendra. He wanted it to be a Take That to his cousin who screwed up Kendra's life.
Molly, Cassie, and Charlotte are the Greek Chorus.They don't really forward the plot. They just help spread the rumor in "It Can't Be True." They definitely show some Greek chorus traits in "Opportunity".
Lucy doesn't really like Brett
Lucy used to be more popular than Kendra, and helped Kendra become popular. Kendra ended up becoming more popular than her and making Brett like her. Both of those things spur her to ruin Kendra and Brett's chances at a relationship, making her no less of an Alpha Bitch but a little more of a No Good Deed Goes Unpunished.
Appleton is near Indianapolis