What is the importance of Cornwallis and Sons in the novel, The Word Is Murder?

Cornwallis and Sons is the funeral parlor that Diana goes to in order to arrange her funeral. Due to this chance meeting Cornwallis decides kill her so that he can gain access to Damien and kill him. The funeral parlor supports the theme of how chance can change the trajectory of one’s life. Both Diana and Damian die because she happened to choose this funeral home to make arrangements for her funeral.