Here is a great collection of recent news, articles and examples of false confessions, which continue to plague the system. 

http://www.pbs.org/wgbh/pages/frontline/the-confessions/false-confessions-and-interrogations/

Here are some earlier posts on the issue:

Famous False Confession Cases

False Confessions Plague Criminal Justice System With Wrongful Convictions and Wrongful "Guilty" Pleas

The Sad Case of Lester Eugene Siler

Top Five Reasons To Say NO To A Police Search

FBI To Finally Start Recording Interrogations

Why Do Innocent People Confess?

Another Top 10 Reasons to Remain SILENT

False Allegations, Arrests, Confessions and Convictions