Within the pages of Busman's Honeymoon: A Love Story with Detective Interruptions, the richly realized figures of Harriet Vane and Lord Peter Wimsey find themselves accompanied by a colorful array of new personas. Mr. Puffet, the sweep, echoes the character of Alfred Doolittle, George Bernard Shaw's philosophical dustman, brought to life with Sayers's unique flair. In the realm of the ecclesiastical, the Rev. Simon Goodacre steps forward to join his counterpart, the Rev. Theodore Venables from The Nine Tailors (1934), embodying the archetype of the well-intentioned yet naive clergyman, steeped in the noble traditions of the English Church.

Adding to this vivid tapestry is Miss Twitterton, a character reminiscent of Miss Climpson—who makes a brief reappearance—yet with a twist. Her character is shaded by an all-too-human infatuation with the morally ambiguous Frank Crutchley, who, though lacking depth as a villain, is nonetheless disturbingly credible. Meanwhile, Inspector Kirk's fondness for literary quotations challenges the notion that Sayers neglects to infuse intellectual vigor into her lower-class characters.

Ironically, it is this very trait of Kirk's that has spurred some critics to argue that the novel is overburdened with literary references. Yet, the real difference lies not in the sheer volume or fervor of these literary diversions but rather in their explicit nature. Throughout Sayers's works, literary quotes and allusions abound, but here the characters actively engage in a playful game of recognition, adding another layer to the narrative's complexity.