Law & Order: Special Victims Unit (1999)

S12E2 Bullseye

After a horrific assault on a ten-year-old girl leaves her struggling to remember her own name, Fin steps in to help identify her. However, as the investigation unfolds, the detectives discover that she isn’t the only one with gaps in her memory. To address the troubling situation at home, Dr. Huang is called in for an evaluation.