A Mixture of Frailties is the last of the Salterton trilogy, three novels which share the city of Salterton and certain characters in common. In A Mixture of Frailties, unlike the earlier novels, Davies uses the city of Salterton as a place of departure rather than the primary setting. If one is interested in finding out more about Solomon and Veronica Bridgetower, Mrs. Louisa Hansen Bridgetower, Humphrey Cobbler, Miss "Puss" Pottinger, and Dean Knapp, one will find these characters in the earlier novels, Tempest-Tost (1951) about an amateur production of The Tempest and Leaven of Malice (1954) about the consequences of a false wedding announcement.