The dummy Lula Landry fell from his window. Died instantly.
Survey Conclusion: suicide.
Yes but no. His brother is convinced that Lula was murdered and asks Cormorant Strike, private detective on the verge of bankruptcy, to resume the investigation.
Luckily, the temporary employment agency with which Cormoran works just sent him a young secretary that he had not requested and did not afford. (Can not you see the connection? I assure you that there is one).
I say no more. I had a lot of fun reading this novel, he navigates between Agatha Christie and James Bond, it relaxes, it escapes, it reads itself: happiness.