About Law & Order: Special Victims Unit Season 15, Episode 20 : Beast's Obsession

The sadistic William Lewis escapes from prison, arbitrarily killing as he goes. Concerned for Benson’s safety, a security detail is assigned to her 24/7, but it doesn’t take long for Lewis to get her back where he left off. With time running out, Benson must decide how much she’s willing to sacrifice in order to save the life of a child. Guest Stars: Pablo Schreiber, Matt Wood, Renée Elise Goldsberry, Sarah Street, Sarah Bisman Storm, Alex Hernandez, Donal Logue, Lily Pilblad, Nikki Estridge, Curt Bouril, Natalie Racoosin, Shiya Ribowsky, Oberon K.A. Adjepong, Mario D'Leon,