WriterTahsin Güner
DirectorIan Barber
Research stateExpanded case file
Spoiler-light premise
A rationalist auctions a medieval whistle said to summon spirits, only to be murdered during a storm as the object disappears.
What to watch for
A country-house gathering, manufactured supernatural effects and a shrinking suspect list create an old-fashioned closed-circle case.
Episode order and contributor credits: source record ↗