Heart of a Killer by David Rosenfelt

Lawyer Jamie Wagner isn't one for hard work. At the large law firm where he's employed, he is given the Legal Aid case of Sheryl Harrison. Sheryl was convicted of murdering her husband six years ago and now seeks a lawyer to help her die. She wants to give her heart to her teenage daughter, Karen, who needs a transplant. Jamie is not sure that he's the right person to help Sheryl, but decides he'll do it to spite his parents. What follows is a suspenseful ride that reveals a mother's love for her daughter, even in the face of a great evil. Heart of a Killer is Rosenfelt's fourth standalone novel. It's a great read-alike for Harlan Coben.