 The puppet that plays Colgan was a newly-made copy of revamp puppet 19, which had appeared in various supporting roles in "Captain Scarlet" and was making its debut as Sam Loover in "Joe 90" while "The Inquisition" was being filmed.The copy would also appear in the later series.Music specially recorded for "The Inquisition" includes a piano piece, performed by series composer Barry Gray, which plays during the Markham Arms scene.