I think this has nothing to do with corruption. Okay, how to you catch a criminal who has no logic, or motivation behind his crime. This is why profiling was invented, to try to describe the criminal as a person, because any other method is just doomed. And the truth is a regular officers have no experience in profiling, because profiling is as useless to figure out any other crime, as normal methods are useless to find serial killers. Serial killers are an extremely rare occurrence, which is what makes them so fascinating. They need to be caught by special methods, that most officers are infamiliar with, because it is almost impossbile that they will ever face a serial killer in their career. So if you have a training budget, any other training makes way more sense.