The quickest way to untangle these mysteries is to keep two lists: people in Susan Ryeland’s contemporary life, and people inside the Atticus Pünd manuscript. This guide sets out the starting relationships. It does not identify killers or turn every suggestive parallel into an answer.
Susan’s continuing circle
Susan Ryeland is an editor whose professional relationships become entangled with investigations. Alan Conway is the author of the Pünd novels she edits; Charles Clover belongs to her publishing world. Those roles matter because making a book involves more people than the writer named on its cover. Author, editor and publisher may want quite different things from the same manuscript.
Katie Williams is Susan’s sister. Andreas Patakis is her partner as the story begins. Keep those personal relationships distinct from the people Susan meets through a case: Katie and Andreas have a stake in her choices that goes beyond finding an answer. Follow their profiles in series order if you want to see how those ties develop without jumping ahead.
Magpie: Alan’s life and Pünd’s village
James Taylor is Alan’s partner, while Claire Jenkins is Alan’s sister. Inside the manuscript, James Fraser assists Atticus Pünd, and DI Chubb is a police investigator. Pünd’s inquiries bring him into the world of Sir Magnus Pye and the surrounding village.
The similarities between these groups are part of the fun. Matthew Beard plays James Taylor and James Fraser in Magpie, while Pippa Haywood plays Claire and Clarissa Pye. Alan reshapes people from his life into fiction. A shared performer gives the audience a visual prompt to compare the characters, but their conduct, knowledge and relationships still belong to their own world.
Moonflower: the Trehernes and two hotels
Lawrence and Pauline Treherne are the parents of Cecily and Lisa. Cecily is married to Aiden MacNeil. Branlow Hall connects this family to Susan’s investigation after Cecily disappears. If different surnames cause confusion, remember that Cecily may be identified through her family as Treherne or through her marriage as MacNeil.
The Moonflower Hotel belongs to the book Susan rereads, Atticus Pünd Takes the Case. Melissa James belongs to that fictional story. Write the hotel’s name beside a character when taking notes; it prevents an event at Branlow Hall from accidentally becoming evidence about someone inside the manuscript. The relationship between the hotels is something to explore, rather than a reason to collapse their casts into one list.
Marble Hall: the Crace connection
Eliot Crace writes the Pünd continuation that Susan is asked to edit. Miriam Crace, the famous children’s author, is his grandmother. His family history and his manuscript therefore create two routes into the new mystery: Susan can speak to people connected with the Craces, and she can examine the fictional choices Eliot has made.
Lady Margaret Chalfont is part of Pünd’s Last Case. Keep her manuscript story on Pünd’s side of your notes. Identifying which family member seems to echo which fictional figure can be enjoyable, but an echo is only a starting hypothesis. Let the story establish the connection before treating it as a fact.
Use actors as a memory aid
The actor directory explains each performer’s roles, while the character directory follows the people they play. Use the actor route to answer “Where have I seen that face?” and the character route to answer “Who is this person related to?” Separating those questions is especially helpful when returning performers appear in a later series with a different combination of roles.
Read or listen to the Susan Ryeland books
Magpie Murders (2016)
Anthony Horowitz’s novel behind the first television mystery.
Waterstones · print Audible · audiobookMoonflower Murders (2020)
Anthony Horowitz’s novel behind the second television mystery.
Waterstones · print Audible · audiobookMarble Hall Murders (2025)
Anthony Horowitz’s novel behind the third television mystery.
Waterstones · print Audible · audiobookPaid links may earn commission, at no extra cost.

