What happens in Ludwig Series 2 Episode 4?

Professional snooker player Oliver Cowie loses a televised match to rival Danny Sloane, returns to his dressing room and is found with a knife in his back. The corridor is visible from the playing area and no intruder appears to follow him, while Danny remains on camera celebrating. A missing wallet suggests robbery, but the low value makes it an unconvincing reason for an elaborate venue murder. John would rather support Lucy's interview with Joanne Kemper than investigate, yet the impossible access draws him in.

Oliver's notebook contains trick shots, prompting John to consider a mechanism rather than an unseen visitor. Danny behaves evasively around the boot and underside of his car, where he seems to be searching for something. Inside the venue John finds a damaged pipe and string above the room. The pieces resemble a deliberately staged snooker shot: an initial action can send an object through a planned course and trigger a result at a distance.

Danny set the apparatus before the match. Once Oliver was alone, Danny telephoned him; the call was part of the timing. A snooker ball rolled through the pipe, broke through the weakened section and pulled a cord that launched the knife into Oliver. Danny therefore remained visibly elsewhere when the blade struck. He trusted himself to win and built the scheme around the match order, then removed evidence and took Oliver's wallet to simulate ordinary theft.

The cleanup fails because Danny drops the wallet outside in a gutter and later searches near his car. His fingerprints are on an object he claims not to know. John reconstructs the ball, pipe, string and knife as one remote trick shot, turning the broadcast alibi into proof of planning: Danny needed the cameras to show him away from the dressing room. The case changes from whodunit to howdunit, with motive and opportunity becoming persuasive once the mechanical route is demonstrated.

Lucy visits florist Helena Moss, who knew Dominic Kennedy, Ryan Oakley and Kemper at university. Helena confirms elements of the 2004 party history but alerts Kemper to Lucy's approach. James unexpectedly telephones John and orders him to stop the interview, refusing to reveal his location. John instead gives Lucy a coded phrase that unsettles Kemper and signals that they know more than their questions disclose. Henry understands the danger sharply enough to call Kemper a serial killer. James is alive and monitoring events, but his warning leaves the family unsure whether he is protecting them, protecting his investigation or responding to pressure.

Oliver's trick-shot notes teach John to think like both victim and rival. A professional player understands rebounds, delayed effects and the confidence required to begin a sequence before its result is visible. Danny adapts those principles to the architecture above the dressing room. His telephone call does more than establish contact: it ensures Oliver is placed for the final movement. The stolen wallet is an unnecessary flourish intended to redirect the inquiry towards robbery, and recovering it destroys Danny's claim of ignorance. Lucy's simultaneous interview provides John with the verbal idea of taking a turn in a game, but the accusation rests on venue evidence. Every component can be followed from the first rolling ball to the blade's release.

Who killed Oliver Cowie?

Danny Sloane killed Oliver with a remote “trick shot”. A ball travelled through a weakened pipe and pulled string that launched the knife while Danny remained on television. John finds the mechanism and Oliver's wallet, which Danny dropped while staging a robbery.

Key clue: the broken pipe, string and snooker ball form a timed mechanism, while Danny's fingerprints on the discarded wallet expose his cleanup.

Red herring: live broadcast footage that appears to give Danny an unbreakable alibi.