However, when she agrees to help out one of her friends, Kathleen discovers that a simple case of a servant being dismissed without notice has turned into a complicated puzzle that she is determined to solve. While featuring minor characters from Locke’s Victorian San Francisco mystery series, Kathleen Catches a Killer contains all the light romance, humor, and suspense of the longer works. Chronologically, this novella comes right after the events in Pilfered Promises, but it can be read as a stand-alone and an excellent introduction to this mystery series about the gas-lit world of the late 19th century.