User blog comment:AltertheSilverBird/Total Drama: Danganronpa. Chapter 4: Class Trial/@comment-26184706-20160414002919

So, the killer is an associate of both victims, and did not notice that the purple book was being passed back and forth. They had to be in the library, which would put Owen's testimony about he and Noah not noticing anything under suspicion. However, both Courtney and Jasmine have been in regular contact with both victims, and are co-leading. It's really hard to determine who did it, I hope we can find out, because I want to select the victims for next time.