Sarah Kaplan is known to have researched her crime, but a meticulous effort was made on her behalf by an accomplice. Her identity is mostly unknown. She’s believed to have contacts in Cambridgeshire, but apart from this, the details are too vague and sketchy.
She stayed in London in a house she owned for only a brief time. It was sold on privately, and remains in private hands. Her sojourn was understood to be a serious effort to infiltrate but it wasn’t successful. It ended after a lot of false turns, and reverse investigation.
