I don't know for sure as I haven't read this book. But in pulp mystery novels, there are usually a detective or an investigator as a main character. Maybe 'Donnybrook: A Novel' has such a character who is trying to solve the mystery.
I'm not sure specifically as I haven't read it. But generally, in pulp mystery novels, it might be about a complex mystery, perhaps a crime that needs to be solved. There could be a detective character involved, and lots of suspense and unexpected twists.
There are also characters like Tommy and Tuppence Beresford. They are a young couple who often find themselves involved in various mysteries. Their relationship and their different personalities contribute to the story as they work together to solve the cases in novels like 'The Secret Adversary'.
Amanda Kendall also plays an important role. She has a relationship with Sidney that adds a touch of romance and further complexity to the story. These main characters, along with the various villagers and other secondary characters, create a rich tapestry in the Grantchester mystery novels.
There are also some recurring characters like the police captain who Columbo reports to. This character adds another layer to the story as he sometimes questions Columbo's unorthodox methods but in the end is always impressed by his results. And then there are the witnesses, who provide important clues for Columbo to solve the mystery.
One of the main characters could be the detective - like figure. He is often intelligent and observant, always on the lookout for clues. For example, in some novels, he might be a private investigator who has a reputation for solving difficult cases.
The main character is Inspector William Murdoch. He is a very intelligent and dedicated detective. He uses modern (for the time) forensic techniques to solve crimes.
In Poe's mystery novels, C. Auguste Dupin is a very important main character. He is a highly intelligent detective with great deductive skills, as seen in 'The Murders in the Rue Morgue' and 'The Purloined Letter' where he uses his wits to solve complex mysteries.
Pulp magazine mystery novels typically have a strong sense of mystery and suspense. The characters are often vividly drawn, with the villains being particularly menacing. They also tend to be relatively short, which makes for quick and exciting reads. And the cover art of these pulp magazines is often eye - catching, designed to draw readers in with a hint of the mystery within.
One classic pulp mystery novel is 'The Maltese Falcon' by Dashiell Hammett. It features the tough detective Sam Spade and a complex web of intrigue surrounding a valuable statuette. Another is 'The Big Sleep' by Raymond Chandler, with his iconic detective Philip Marlowe. These novels are known for their hard - boiled detective characters, convoluted plots, and a seedy underworld setting.
Dashiell Hammett is a very famous author of pulp mystery novels. He created works like 'The Maltese Falcon' which are considered masterpieces in the genre. Raymond Chandler is also well - known. His detective Philip Marlowe is an iconic figure in mystery literature. These authors were able to create a sense of atmosphere and suspense that is characteristic of pulp mystery novels.