S10E7 : They Seek Him Here

Nick Cheney was once a successful director, but he has now ended up mainly directing low-budget films. We meet him as he is directing The Scarlet Pimpernel at Magna Manor. A former convict, Jed Norris, has been hired as a security guard on the film set, and one night he finds the director dead, beheaded by the use of a guillotine.