I'm writing a whodunnit.
At a certain point in the story, the detective finds a letter from one of the suspects (who is the director of a play,) which is intended to intimidate one of the other suspects (who is an actress in the play) so she won't talk about something that the lead actor of the play did to her. The director of the play was worried that if the secret about what his lead actor did to the other actress, the play would be cancelled/destroyed.
Currently, the way the detective finds out is through searching the actress' house and finding the threat, but I was wondering if there was a more creative way to do it.
Does anyone have any ideas?