The mystery I'm writing is set in 1900's Paris, and my main character interacts extensively with real-life political and socialite figures of the time. At one point, I have a scene where the sister of a famous actress is murdered onstage in front of an audience that includes the French President and Prime Minister. I'm definitely taking artisitic liberties because history dictates the actress never had a sister and no one in her family was ever murdered. My question now becomes, does adding a nonexistent family member and murdering her cross too far out of the realm of historical accuracy to make the scenario believable? And, should I be so detailed in my research to determine if the President and Prime Minister actually were in the country at the time and thus would have been able to go to the theatre and interact with my main antagonist? This just seems to be almost too much research and it feels extremely restricting in terms of whom my characters can interact with. Perhaps I'm over-thinking this. It feels like it, but I can't shake that little voice whispering darkly "be historically accurate!" as I write. Thanks for your suggestions!