One of the president's fitness methods is to take his dog Taro for a walk in the nearby park before going to work every morning. Taro is of Akita descent, so it is not enough to walk alone in the morning, so he asks dog trainer for training once a week.

One morning, after President 3 took Taro out for a walk for an hour, I saw Taro running home. My wife was worried that he would go to the park and saw President No.3 lying dead in the middle of the playground. Blood oozed from the temple as if it had been hit on the head by something blunt.

Because it was the early morning after the rain, the footprints of Kazutaro, the third president, were clearly visible on the ground soaked by the rain last night. What is puzzling, however, is that no other footprints have been found. Not only that, there was no weapon left beside the body.

In this case, how can a criminal kill President 3 and escape without leaving a footprint?

Answer:

Outside the stadium, a criminal shot at the victim with a lead bullet as an arrow or slingshot. The so-called slingshot is a powerful shooting tool consisting of a bow and a projectile.

The lead shot hit the victim's temple. After the victim fell to the ground and died, the criminal ordered Taro to "pick it up". So Taro ran to his master, picked up the weapons on the ground, and the lead shot returned to the criminals. So, it was the criminal who let the dog go home after finding the murder weapon.

In this way, the criminal can kill the victim without going near, so there are no footprints on the playground at the crime scene and the murder weapon can be recovered. Of course, only dog trainer, who trains dogs every week, can guide Taro to complete this activity. In other words, dog trainer is a criminal.

This technique appeared in A. Baukis's The Killer Without Wings. It is said that instead of using bows and arrows, the victim was hit on the head with a hard baseball with accurate throwing power, and then the dog was ordered to pick up the ball.