What always comes into a house through the keyhole?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

The world's largest Thanksgiving turkey was on display at a fair. Everyone was admiring it when suddenly a woman ran up and shot the turkey and left. Everyone knew her yet nobody made any attempts to stop or report her. Why?

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

I travel all around the world but always stay in the corner. What am I?

What goes up but never comes down?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?