When Lily Milton (guest star Deborah Ann Woll) is reported missing, her boyfriend, Parker Hubbard (guest star Bobby Campo), points Detectives Benson and Stabler in the direction of Callum Donovan (guest star Stephen Rea), Lily's downstairs neighbor and convicted bank robber who spent nineteen years in solitary confinement. During the investigation into Donovan's alibi, Lily is found alive,