Maggie McPherson Home » Characters » Maggie McPherson Margaret “Maggie” McPherson is a Deputy District Attorney in Los Angeles. She is Mickey Haller’s ex-wife and Hayley Haller’s mother. Appearances The Law of Innocence (2020) The Gods of Guilt (2013) The Drop (2011) The Fifth Witness (2011) The Reversal (2010) The Brass Verdict (2008) The Lincoln Lawyer (2005)