PI Witnessed Kidnapping

As the fame-seeking phony who calls himself Clark Rockefeller appeared on TV to plead his case, the adorable daughter he snatched was out of hiding and with her mother in London yesterday.

Meanwhile, the Herald has learned that Sandra Lynne Boss had hired a private investigator to tail her former husband prior to the alleged kidnapping.

According to a law enforcement source, Boss, 41, used the detective to keep an eye on Rockefeller - who authorities have identified as Christian Karl Gerhartsreiter - during his first supervised visit with 7-year-old Reigh “Snooks” Storrow Mills Boss on July 27.

The mother’s fears were realized when he snatched Snooks off a Back Bay street, touching off a five-day international manhunt.