Here are a couple of website links about this film.

Producer of KNOCKING posts at my guest list, Barbara Anderson replies
www.jehovahs-witness.com/6/93613/1.ashx


Jehovah's Witnesses PBS Film KNOCKING Omits the Facts
www.pressbox.co.uk/detailed/Society/Jehovah_s_Witnesses_PBS_Film_KNOCKING_Omits_the_Facts_33760.html