Murder Dictionary is a true crime comedy show with an alphabetical filing system. Each theme opens a drawer. Suitcase murders, railroad killers, quarantine murders, killer kids, Facebook murders, and elderly murderers all become ways to organize cases that might otherwise feel scattered. Brianna and Courtney keep the format conversational. The pace is loose, but the cases are specific. Episodes walk through timelines, relationships, warning signs, investigative decisions, suspect behavior, and the aftermath for victims and families. Some details are procedural, such as recreations, interviews, profiles, and the work of piecing together a final night. Others are social and emotional, especially when the discussion turns to family tension, abuse, neglect, coercion, or people ignoring obvious danger. The show is comfortable saying when something sounds wrong. It also has a habit of asking why adults, institutions, or investigators made the choices they did. That gives the conversation more texture than a straight case recap. The humor is dark and reactive. It comes through in asides, disbelief, and the rhythm between the two speakers, while the crimes themselves are treated as serious and often upsetting. The show also repeatedly points listeners toward research links and support resources in the notes. Domestic violence support, suicide hotlines, anti-bullying resources, 12-step programs, and similar links are treated as part of the episode routine. That matters, because the subject matter can be heavy. Murder Dictionary works best for listeners who like true crime with a little structure and a lot of host presence. It is not polished courtroom narration or prestige-documentary solemnity. It feels more like two crime-obsessed friends comparing notes, challenging weak assumptions, reacting sharply to cruelty, and keeping track of the alphabet even when the subject matter is brutal.