Crossover Cover: Swan Song

A journalist asks Gervase Fen for an interview for her series on famous detectives, adding that she’s hoping to also speak with H.M., Mrs. Bradley, and Albert Campion, among others. The references to Carter Dickson’s (pseudonym for John Dickson Carr) Sir Henry “H.M.” Merrivale, Gladys Mitchell’s Mrs. Beatrice Adela Lestrange Bradley, and Margery Allingham’s Albert Campion confirm that Gervase Fen is in the CU.