The investigation into a girl's disappearance leads to a high-tech kidnapper who uses the Internet to cover his tracks; Rollins reconnects with her sister.

Benson and Barba ask witnesses to put their jobs on the line after a news anchor makes an on-air disclosure of rape against her boss.

Benson helps two sisters get closure from a harrowing childhood assault. Kat's cousin reaches out for help.

After a woman disappears, the squad notice similarities to a 20 year old DV case. Rollins and Carisi's relationship faces a challenge.

The creator of a dating app is accused of using it to rape women. Velasco's experience as an SVU detective is put on trial.

An internet dating site becomes the source of terror for a young widow. Muncy struggles with Velasco's absence.