Death on the Hawker 400

On a private jet Hawker 400, thirteen passengers, consisting of nine of the Cronwell family, as well as a maid, a cook, a security guard and a private jet pilot, fly to their destination on a small island in Italy. The death of the mistress from the Cronwell family causes their vacation to be spent suspiciously, as the death turns out to be a murder. twelve passengers remain, not a single soul completely trusts the other, as every single person is a suspect. The murderer is among them, and it is uncertain what (s)he is up to next.