Write a mystery prompt: A renowned detective is called in to investigate a series of strange disappearances at a secluded mansion

Write a mystery prompt:

A renowned detective is called in to investigate a series of strange disappearances at a secluded mansion. The only clue left behind is a cryptic message written in blood on the wall. As the detective delves deeper into the case, they uncover dark secrets and betrayal among the mansion’s wealthy and eccentric residents. Can they unravel the mystery before it’s too late?