The Case Of The Ruined Ram

The students in Miss Hodges’s forensic science class have been given a tough case to crack: The high school’s Rocky the Ram mascot costume was stolen and destroyed! The class divides into teams to investigate, and the first team to solve the crime wins extra credit and gets VIP tickets to Rams games for the rest of the year!
Corey, Hannah, and Ben quickly get to work. They discover that a very similar crime happened twenty-five years ago, and back then the rival high school confessed to the vandalism. Is this just a copycat prank? Or could someone else be to blame?