In the exclusive clip above, Benson asks Cassidy about a photo of him found at the home of Coach Gary. But Cassidy is evasive, and saved by the knock on the door. Is...that jealousy coming from Benson?
Cassidy previously told Stone it was his youth baseball coach who molested him.
Orange Is the New Black's Selenis Leyva, Gotham's Justin Mark, and Power's William Sadler also guest star in the historical episode.
See new photos from the episode below.
Law & Order: SVU airs Thursdays, 10 p.m. on NBC.
(E! and NBC are both part of the NBCUniversal family.)