Before we dive into the case of Jenna Hawthorne we have to mention Lou, who ends up being one of Peter and Sam's biggest suspects about halfway through the season. Lou is on St. Bernadine's basketball team and is the ultimate wingman to the team's star player, DeMarcus Tillman, who's so good people call him "Mr. Untouchable." While Lou is nowhere near as talented as DeMarcus, he hopes that by catering to his friend's every whim he'll be able to ride his coattails into the NBA in some regard, likely as his agent or manager.
He ends up as a suspect when he's spotted using a special key card to gain access into the teacher's lounge in the middle of the school day. As you might recall, one of the Turd Burglar's "pranks" was switching out a normal chocolate in the teacher's lounge advent calendar with a chocolate-coated turd. Not only would Lou's key card have made it easy to pull this off, but he also had the glitch on his phone.
Later on in the season it's revealed by a former basketball player that Lou is insanely controlling of DeMarcus and willing to go to great lengths to keep DeMarcus's basketball career on track. For instance, when a teammate tells Sam and Peter that he saw a Turd Burglar calling card — literally a business card with a poop emoji on it — in DeMarcus's wallet, therefore incriminating him, Lou corners the teammate in the locker room and punches him in the face. By the end of the season, though, we know for sure that Lou was not the Turd Burglar. As for DeMarcus? Umm . . .