Britney returns to stir up trouble when Quinn thwarts Adam and Rachel's plan. 

Adam chooses Anna, but Rachel comes clean to her about her and Adam after Jeremy tells her that he knows the truth and embarasses her in front of everyone. 

Quinn and Rachel realize they are killers and decide not to kill anyone next season, but Jeremy sets out to prove Rachel is crazy by going to her mother to get her in trouble. 

The network drops Quinn's idea, but after she has to save the live wedding extravaganza, Brad promises to take another look. Chet tries to get Quinn back, but she says it's too late for them. 

Rachel gets one final revenge on Adam when she realizes he has played her all season. 

Britney goes crazy when Anna runs away and tries to steal him for herself.