On a special event at the prison, 5 prisoners John, Jacob, Krist, Tang, and Dang given a chance to go to a sauna and can bring one thing with them.

Following are the things that the prisoners bring with them.
John: A soda
Jacob: Thermos
Krist: Book named "How to kill"
Tang: A Walkman
Dang: Harmonica

Since it is a Sauna, no one can see each other. After a while When the steam is switched, Tang was found dead and there was blood all around.
J Bond was called and he instantly come to know who can be the murderer. How?

I am the first thing you need while camping.
I am always with the person named Marcos Valencia and Carrick.
But Pogba Zlatan and Rooney think I am wasteful and do not need me.
I am the second to the last thing to add when you are making a patch.

What am I?

Who is that with a neck and no head, two arms and no hands? What is it?

It belongs to you, but other people use it more than you do. What is it?

What can you hold in your right hand, but never in your left hand?

Can you count the number of squares in the given picture?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

What 5-letter word typed in all capital letters can be read the same upside down?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

I am sure no one can have two things for dinner. what are they?