S16E07 - Chicago, New York Crossover
Synopsis
Sergeant Hank Voight (Beghe) and Detectives Erin Lindsay (Bush) and Jay Halstead (Soffer) track a child pornography victim to his last-known whereabouts in New York City, where Sergeant Benson (Mariska Hargitay) and the SVU squad get a new lead – evidence of a livestreamed pornography "club" that caters to its subscriber’s shocking requests. When Lindsay discovers someone from her past is involved, she hopes it will help lead them to the site’s ringleader, but tensions between Voight and Benson could threaten the case.
(Nobody Touches Anything (1) aired on Chicago Fire, season 3, episode 7. They'll Have to Go Through Me (3) aired on Chicago P.D., season 2, episode 7.)