Jeremy Irons plays the recurring character of Dr. Captain Jackson who aids the SVU in the pursuit of a pedophile. He had previously played the most famous fictional pedophile of all, Humbert Humbert, in the 1997 adaptation of Lolita (1997).
A.J. Cook, who plays a victim, also is a main character on Criminal Minds (2005), another long-running police procedural.
Jeremy Bobb (Donny Greenway) also played the part of Vincent Moran in episode 14.8, Lessons Learned (2012).