The Middlesex District Attorney’s Office is dedicated to identifying potential wrongful convictions and facilitating access to post-conviction DNA testing for viable innocence claims. To further this goal, District Attorney Marian Ryan established Middlesex County’s Conviction Integrity Unit (CIU) in 2013 to review post-conviction claims of actual innocence, minimize the impact of cognitive biases on prosecutions, and respond to such claims in a fair, efficient, and comprehensive manner.