Who Killed Cassandra Cass?

After Cassandra Cass is shot in her bed (by a mysterious hooded figure) while her butler draws her bath, it is revealed that she has been blackmailing subscribers to her society Blue Book. One after another of the suspects (a deposed Balkan King, a banker, a drugged out socialite and the head of a ""psychodrama"" society) more or less confesses to the crime, but each of their descriptions of the event varies slightly from the known facts. Meanwhile, Les keeps insisting that ""the butler did it"". With the help of Cassandra's sexy secretary and a health fanatic, Burke concocts a plan to trap the real killer.