How innocent people land in prison

[Xyzse]

11. One must also consider the current "Plea" method in courts

Lawyers routinely suggest that a defendant plead guilty to get the lesser charge or gain some sort of leniency, even if they did not actually commit the crime. --http://www.npr.org/templates/story/story.php?storyId=122286337 "there are lots of defendants who are facing, let's say, the death penalty, who are facing really severe mandatory minimums or really severe sanctions under the federal sentencing guidelines that will plea guilty to crimes that they didn't commit. "

This also happens with Police keeping people detained for questioning, not letting them leave till they confess, even if they really didn't do anything either. http://www.npr.org/2012/01/02/144489360/how-a-teens-coerced-confession-set-her-free

So yeah, Innocent people can and will plead guilty at times due to many different situations. Either way, the more money you have for a lawyer, the better you can get away with things.