Retreat

What is Retreat about (plot, summary)
Retreat is a radical conceptualization of the whodunit with a new kind of detective at the helm — a gen Z amateur sleuth named Darby Hart. Darby and 11 other guests are invited by a reclusive billionaire to participate in a Retreat at a remote and dazzling location. When one of the other guests is found dead, Darby must fight to prove it was murder against a tide of competing interests and before the killer takes another life.