I learned that if a teenager is kidnapped, the police will show brief interest but then pretty much give up.
I learned that if quality photographs are taken of the kidnappers by a witness, the police won't care.
I learned that when police set up a check point to try and capture the kidnappers, they don't need to be bothered with little details like what the victim looks like.
These were seriously some of the dumbest kidnappers I have ever seen, but somehow the police were so immensely lazy that they had not trouble staying hidden.