Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

There are five people. One of them shot and killed one of the other five.
We know following clues:
1. Dan ran in the NY City Marathon yesterday with one of the innocent men.
2. Mike consider being a farmer before he moved to the city.
3. Jeff is a top notch computer consultant and wants to install Ben new computer next week.
4. The murderer had his leg amputated last month.
5. Ben met Jack for the first time six months ago.
6. Jack has been in seclusion since the crime.
7. Dan used to drink heavily.
8. Ben and Jeff built their last computers together.
9. The murderer is Jack's brother. They grew up together in Seattle.

Consider yourself to be a famous detective "Sherlock Homles", Can you find the killer?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

John leaves home and then he takes three right turns. John wants to return to home but he was scared of Jacob, who is wearing a mask.

What is John Situation ?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

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

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?