Jack Hart is the son of murdered woman Meredith Hart, who disappeared around the same time, as well as a savant on the autism spectrum.
History[]
He always knew of the day his mother disappeared, but his mother swore him to secrecy and promised to return. Before she left, Jack memorized the truck and license plate of Meredith's boyfriend Trace Lambert.
In 2021, Lambert's hideout was eventually found in Manhattan, where numerous women were killed and mummified, including Meredith. Lois and Jack were tracked, while the detectives spoke to his grandmother, Jack was on his headphones. After the topic of Meredith's disappearance came up, Jack spoke up and revealed the exact day and recited the license plate of Lambert's pickup truck. Lois was amazed by this news and asked why he never told her as he sadly revealed he never told because his mother instructed him not to because of their promise.
Jack's story was instrumental in tracking Lambert, leading to his arrest and eventual imprisonment. (SVU: "They'd Already Disappeared")