Lexie, Casey, and John are in a band together. Casey is the singer and a record deal is looking to sign her to a solo career. She has an audition for it on Thursday.
Lexie and John secretly met up. John persuaded Lexie to sabotage Casey so she won't get a record deal and will have to say in the band. Lexie decided that she would go along with it.
They made Casey a drink that had a powder mixed into it to dry her throat out. She won't be able to sing on Thursday!
"I'm sorry, I don't like lemonade.. You can have it. I'll go pour me a glass of water."... Oh no, the plan isn't gonna work. John had to drink the lemonade so she wouldn't be suspicious about anything... The sabotage didn't work. "Lexie how about you try some too?" Oh no, she must know about their sabotage.
Lexie said, "Oh no I think I'm fine," but Casey wasn't having it. She poured the lemonade all over Casey's face and poured some in her mouth. Oh no... John started feeling sick. Casey poisoned the lemonade!
Casey left and they both died. John's friend came over to say hey and found them both, as well as a few of Lexie's super long blonde hairs. He told all of John and Lexie's friends and when the friends found out, they went and killed Casey.