are there any books I can read online about bank robberies or hostage situations for free

Answer 1

You can search here:
http://books.google.com
You can see categories at the left or you can search by title or topic.

Here are other etext websites:

http://infomotions.com/alex2/

http://directory.eliterature.org/

http://digital.library.upenn.edu/books/index.html

Another way to find things is to search for them at www.amazon.com, and once you've found a title that looks interesting, check the sites above to see if it's available online.

Answer 2

PS -- Books that are under copyright are not usually available as etexts, but you never know -- once in a while, an author may have made a deal with an online publisher. It never hurts to search.