While talking with Nikki, Eddie realizes that everyone (including Marjorie Baverstock, the producer, and Roger Hopewell and Bernice Roth, the writers) were all part of the creative team that made Manhattan Holiday, in which The Stage Door Slasher murdered three women.
Eventually after much murderous mayhem the Stage Door Slasher is revealed and captured through deciphering Bebe's coded notebook.
Elsa appeals to him to help solve the mystery of the Stage Door Slasher, and Kelly at first pretends to be her butler.
In the second act, he is kidnapped by an unseen figure and disappears into a secret passage, and is later found with his hands tied and a gag in his mouth.
Eventually, O'Reilly claims to be "Tony Garibaldi", an undercover cop with a Bronx accent-only to reveal himself as a Gestapo Agent named Klaus Stansdorff, sent to find German defectors.
Ken is eventually revealed as the Stage Door Slasher, and explains that his hatred of ballet dancers stems from his father, who ran off with one and abandoned his mother.
Nikki is considered a typical chorus girl-but she is eventually revealed to be Ensign Nicole Crandall, of United States Naval Intelligence.
She is also interested in solving the mystery of the Stage Door Slasher, and helps to break the code in Bebe's notebook.
Directly based on Bob Hope, Eddie is the out of work comedian that ties the different story lines together, and goes from being cowardly at the beginning of the play to heroic at the end.
He is the one who realizes the connection between the Slasher case and the party, and later helps to defeat Ken and Dieter, both by knocking them out with a cognac bottle.
She is accidentally killed by Dieter at the end of the first act (in the dark he thought she was Elsa); strangely, no one seems to notice, despite the fact that there is an enormous sword through her back.
Roger enjoys teasing Ken about his artistic ways, and makes snide remarks throughout the play, but flares up whenever someone insults his musical style.
Towards the end of the play, Roger reveals a surprising knowledge of ciphers, and helps Nikki and Bernice break the code in Bebe's notebook.
She spends the entire second act attempting to "fix" the play, even when she is held hostage by Ken, O'Reilly, and Dieter.
In the finale, she is struck with inspiration toward a new work that takes place in the heartland of America – a cowboy play called Nebraska.