New situation puzzles

Every night before going to sleep, Lisa locks the door of her house and attaches the key to a string. Why?

A man lies dead next to a feather. How did he die?

Sally was sleeping when she was awoken by Jack. She walked to the door and found a letter. She read it and began to cry. She now knew that her boyfriend would never see her again. Why?

One day a man received a parcel in the post. Carefully packed inside was a human arm. He examined it, repacked it and then sent it on to another man. The second man also carefully examined the arm before taking it to the woods and burying it. Why did they do this?

A couple of dancers die around a dance competition.

A woman walks into a pet store to buy a parrot. The seller offers her one, telling her that it can repeat everything it hears. Some days later the woman - feeling cheated - goes back into the store to get her money back. However, she comes back home with the parrot and not her money.

In the front of a car, a woman is found dead. There is a gun in the back seat, out of her reach. The windows are closed and the doors are all locked.

Paul goes diving. How could he know he would be burnt to a crisp?

Helen never thought that her decision to travel by plane would save her life.

A woman buys a pair of red shoes and goes to work. WHile she was working, she dies.

She thought that it was the best day of her life moments before she died.

Jack and Judy were lying on the floor dead. There was a puddle of water and broken glass on the floor. How did they die?