Who did it

Question: A cop is chasing a man that just robbed a bank in crimesville. The cops name is robber and the robbers name is cop. Another man is a theft at another bank steeling money and another police is chasing him. The polices name is theft and the mans name is police. A third man steels money at the other bank in crimesville and the sheriff is chasing him. What is the name of the sheriff and the third man?

Question: People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?

Question: During what month do people sleep the least?

Question: When is 99 more than 100?

Question: What can be broken but never forgotten?

Question: Surrounded by life , yet life is its biggest enemy. But without life there is no need for it to exist. What is it?