What is the importance of Brompton Cemetery in the novel, The Word Is Murder?

Brompton Cemetery is where Diana's funeral takes place. It is here that Meadows tells Hawthorne that he thinks that a thief killed Diana. It is also here that the song emits from Diana's coffin. The setting serves to create red herrings, provide a clue, and create a new mystery for readers to solve which further engages them in the narrative.