The empty squad car was parked on a quiet street. When the police officers who occupied that squad car failed to return to the police station for their shift turnover, their relief went out in search of them. It was parked in front of a blue house. They went and knocked on the door of the blue house, but no one answered. Not even when they shouted that they were the police. They went and tried all the other houses on the street in succession, and in succession, received no useful information. No one had seen or heard anything.
The intuition of the officers immediately made them certain the only place they could have gone was inside that blue house. They phoned the judge who was on duty for a telewarrant that would enable them to enter the blue house. This was denied, due to the fact there was no reason at all to grant a warrant to a house solely because it's door remained shut to their repeated solicitations. The judge was sympathetic to the fact that they wanted to find their co-workers, but would not bend the rules to grant them access.
As if the occupant of the blue house knew what had just occurred, he appeared in a window and smirked at the officers on the street. This was the final straw, and they bent the rules and decided to enter the house. The front door was unlocked. After they entered, they did not re-emerge. Later, more police officers came searching for them and found their squad car empty, parked in front of a blue house, near another empty squad car.