I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

A man is lying dead in a field where no one is around. His head is split open and his legs are disfigured. Near to him, there is an unopened package. No living organism can be found anywhere at the crime scene.

How did he die?

Buy me, smell me or deliver me, I do not change.

Who am I?

Find out the missing number in the picture attached:

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?