They Seek Him Here (S10E07)

Nick Cheney, a once-celebrated film director, has seen his career decline to making low-budget productions. The story unfolds as he directs The Scarlet Pimpernel at Magna Manor. On set, Jed Norris, a former prisoner working as a security guard, stumbles upon a shocking scene one night: the director has been gruesomely murdered, his head severed by a guillotine.