Mary and her assistant perform a routine assisted suicide, but things go awry. An event close to home threatens to reveal her "moonlighting" practice. Mary's lapse of judgment with a potential client increases her risk of being discovered.

After being intimate with Joel, Mary has second thoughts about ending his life; a client's son pulls a gun on Des; Kevin's relationship with a new woman gets intense.

Mary confronts Ben; Grady blackmails Mary into helping him break a patient out of the hospital; Ben and Frank get a new lead.

Ben follows Mary to her childhood home where he learns about her past; Grady approaches Mary with an offer; Des becomes a victim of police misconduct.

Mary seriously considers giving up her operations for good.