Adina's Deck

Michael, an 8th grader approaches Adina's Deck with a big problem. His friend Ally has been talking to a guy online for over two months and it seems too good to be true- except the guy is 20! The club takes the case to track down Ally's mysterious crush.

An 8th grader in Mr. B's class plagiarized their paper! Adina's Deck takes the case. In this who-done-it, there are four main suspects, and the club needs to investigate each of their alibis to help Dave get the grade he deserves. Who did it and why?