Enter The Dark is a true crime show with two moods running side by side, and it makes no effort to keep them apart. On one side sits the case material, read in close and often harrowing detail. On the other sit Jan and Les, whose banter is crude, profane and cheerfully inappropriate. Jan calls himself the guide in one episode, opening with a theatrical welcome to 'wanderers of the shadows' before dropping straight into jokes about Les moving house. Les is there 'as always', cast by Jan as a 'manservant', and his new home down south gets compared to the Shire from Lord of the Rings, only with fewer shops. The cases test the stomach. The Albert Fish episode reads out graphic first-person descriptions of cannibalism. 'The Torture and Murder of Sylvia Likens' sets out Gertrude's abuse in unsparing specifics, and its cold open carries a warning about child abuse, sexual abuse and torture. It is also a remake: the pair returned to the case because the audio on the original, recorded when they first started, was poor. The JonBenet Ramsey episode follows investigators to a notepad in the Ramsey home holding what looked like a first draft of the ransom note, which let police argue the note was written inside the house. The humour does not pause for any of it, and that same episode is jokingly billed as 'a nice little fun one for Christmas Day'. Some case episodes begin with a short scene-setting teaser before the greeting. 'The Corpsewood Manor Murders' starts with Charles Scudder and Joseph Odom leaving Chicago in 1975 to build a home in the Chattahoochee National Forest, and later walks through the manor itself: an image of Baphomet, a ritual cabinet filled with teddy bears, a stained-glass window with a Medusa-like skull. Midway through, the pair drift into talk of a doll-filled site under Edinburgh they would like to visit. The second strand is Conspiracy Corner, a series Jan traces back to a childhood of buying a conspiracy magazine and derailing family gatherings with what was in it. 'Conspiracy Corner - The Gemstone Files - Did Onassis kill JFK?' lays out the alleged Onassis story, with oil cartels, the Rockefellers and a Washington Post purchase woven in, all framed as allegation. The RFK episode is more forensic, setting the eight-round capacity of Sirhan's revolver against an analysis counting at least eleven bullets, and a coroner's finding of a shot from inches behind against witnesses who placed Sirhan in front. Jan also flags MKUltra as ground the series intends to cover at length. The Gemstone Files sign-off, a reminder to keep the tinfoil helmet on, sums up the attitude: interested, entertained and not especially solemn. The case episodes close on the same line, 'I've been Jan. He's been Les', along with an open invitation for comments, blunt ones included, and suggestions for cases.