Killer is a true crime show hosted by David Chabotty with co-host Craig Sitzlein, and it prefers to stay with a case across several parts. Cases get numbers and parts. The most sustained run in the recent episodes is the Delphi material, which follows the trial of Richard Allen for the murders of Abigail Williams and Liberty German across four numbered trial installments and 'The Delphi Murders - Post Mortem Show'. By the hosts' own account, Part 1 recapped the murders and what immediately followed, and Part 2 turns to the trial itself. Part 1 also covers the investigation of a man named Klein, who ran a fake online persona built on a male model's photographs and had been in contact with Liberty close to the time of her death. The trial episodes go through the testimony day by day. On day nine, Stacy Bozanovsky, a forensic scientist and DNA analyst, testifies that none of the items she tested carried Allen's DNA, and the hosts note that a single hair found in Abby's hand belonged to Libby's older sister, Kelsey. The pair do not just relay the record. One of them calls the defense's push against a vaguely stated prosecution point a great strategy. A courtroom claim that Allen's appearance had not changed also draws a pointed reaction, set against how visibly he had changed since his arrest photo. The episodes also show real feeling. In Part 2 the conversation turns to how the two girls stayed together in the woods instead of splitting up, and to the possibility, raised by an unspent bullet, that the attacker had a gun as well as a knife. The post-mortem, framed around the conviction, includes a moment-by-moment narration of the phone video from the bridge, down to the second and the figure the hosts call 'bridge guy'. Around the case work, the register is loose and good-natured. The hosts joke about which of them is the better half, grumble about technical demons, and admit that one of these days they will act like they have been here before. They say openly that the show is back after a five-year gap, and when that timeline brushes against presidential politics they steer clear of it. Housekeeping is part of the texture too: a new website at killerpodcast.org with the back catalog still being added, social accounts, and a Patreon pitched as a coffee fund. The numbered format reaches beyond Delphi, to 'Case 017 - The Golden State Killer - Part 2 - (The East Area Rapist - Part 1)', whose opening describes a community so frightened that people slept with shotguns and bought dogs. Every Delphi installment closes on the same two words: stay safe. What a listener gets is a case followed patiently, testimony by testimony, by two hosts who say plainly what they make of it. The subject matter is heavy, including the killing of two girls, child exploitation and sexual violence, and it is discussed directly.