Law and Order SVU 16×19 “Granting Immunity” – Pornographic photos from 15 year-old Savannah Biel’s (guest star Hayden Tweedie) house party quickly circulate around her Tribeca high school and go viral. Barba’s (Raúl Esparza) efforts to arrest the student responsible for posting the images is stalled when several suspects fall victim to a fast-moving measles outbreak. When Benson’s (Mariska Hargitay) foster son also catches the illness, she investigates a group of mothers who may have falsified their children’s medical records. Meanwhile, Amaro (Danny Pino) receives some distressing news about his son. Also starring Ice T (Det. Odafin Tutuola), Kelli Giddish (Det. Amanda Rollins) and Peter Scanavino (Det. Sonny Carisi). Also guest starring Missi Pyle (Trudy Malko), Emily Dorsch (Principal Schwartz), Hari Dhillon (Counselor Varma), Susie Essman (Arlene Heller), Jefferson Mays (ME Rudnick), Julie Lauren (Mia Biel), Christine Toy Johnson (Dr. Celia Lee), David Margulies (Dr. Eric Setrakian) and Jaden Matthew Rodriguez (Gil Mancheno).