Harmon was responsible for initiating investigations. He was under no obligation to initiate an investigation at the request of Schultz.He ran the University Park PA Police Department as the named "police commissioner" of that duly-authorized Pennsylvania Municipal Police Force -- IOW, he had the power to hire or fire not only Harmon, but any other officer on the squad whenever he saw fit. He also had the power to instruct Harmon to initiate any, and all, investigations he saw fit bozo!
He was not the police.