Who Is Clark Rockefeller? is a 2010 American police procedural television film directed by Mikael Salomon and written by Edithe Swensen. It stars Eric McCormack as Christian Gerhartsreiter/Clark Rockefeller and Sherry Stringfield as Sandra Boss. It is based on the life of Christian Gerhartsreiter, a German con artist who for years impersonated many people, at one point claiming to be part of the Rockefeller family going by the faux name "Clark Rockefeller", and kidnapping his daughter. Filming took place in Toronto in October 2009 and was released on March 13, 2010 on the Lifetime network to mixed reviews.