New situation puzzles

A man designed a device into which you can insert colored paper, and then get the ideal 100$. Experts can not distinguish them from the real ones. How does he do that, and why does he sell this device?

He died because he mixed up the colors.

Before going to bed, the woman hides her shoe in the safe. What for?

A man walks up to a cactus, looks at a piece of paper pinned there, and kills himself.

The man received the parcel in which he found a dead mouse. He reported this to the police, and the sender of this parcel was found guilty of fraud.

Following criminals’ trail, a police inspector entered a chess club. Assessing the situation, he told his assistants, “Detain those two!” How did he guess?

A person called the police and told them to ask about John K. Upon arrival at John’s house, the police found him dead. Examining the corpse, the police discovered severe injuries. But the apartment was in perfect order, without any signs of a struggle or break-in.

Eugene was watching his relatives and friends being killed, but he couldn’t wipe the smile off his face.

Tony ran out of the building, carrying two bags. Another man ran after him, shouting and waving knives.

When the priest stopped talking, Bobby died.

A man comes breathless out of a house, closes the door and goes quickly down stairs. Then he walks two blocks to get to another house, enters and breathes relieved.

The man was going to go to work by car, but found that one of the tires was flat. Without doing anything, he got into the car and drove 20 kilometers to work and then back home, without the slightest embarrassment. How could he manage it?