Dashiell Hammett created Sam Spade for The Maltese Falcon, and this radio series plays him far more for laughs than the book or the film did. It ran on ABC, CBS and NBC between 1946 and 1951, and in 1947 writers Jason James and Bob Tallman won an Edgar Award from the Mystery Writers of America for best radio drama. Howard Duff was the series' first Spade, with Steve Dunne taking over later, and Lurene Tuttle was cast as Effie, his secretary. In the 1951 NBC broadcasts Dunne carries the starring credit, and the openings bill William Spier as radio's outstanding producer-director of mystery and crime drama. The shape of those episodes is the attraction. Each begins with Spade and Effie talking, often with Spade in some kind of fix and Effie wanting an explanation. He gives the story a title, always a caper, and promises to come down and tell her everything. Then the dictation starts: book, pencil, date, an addressee, and a sign-off with his license number. The prologues are where the writing shows off. Spade mocks himself as stupid Sam the Incomparable and announces he is about to don the mantle of Don Quixote. He offers to water a tale of society scandal down to Effie's strength, one-syllable words only, and bills it as the lowdown on the uptown. When the Chronicle prints a front-page photo of him with his arms around a redhead, Effie, a redhead herself, informs him it means nothing to her as a person. His defence is that he was keeping the woman from braining him with a paperweight. Elsewhere Effie assures a caller that Spade is on a humdrum job that amounts to sitting in a chair, only to learn the caller is his nurse at the Harbor Emergency Hospital and a bullet was involved. The register can turn, too. The prologue to 'The Denny Shane Caper' has Spade telling Effie that the villains are real and that anyone after sweetness and light should try another detective, and the report goes out addressed to John Q. Public. The run of titles keeps the naming joke alive: 'The Spanish Prisoner Caper', 'The Vendetta Caper', 'The Sinister Siren Caper', 'The Civic Pride Caper', 'The Kimberley Cross Caper'. Effie is sweetheart, angel and cherub by turns, which dates the office dynamic as surely as the network credits do. A newcomer could start with 'The Sinister Siren Caper' for the comic frame in full swing, or 'The Denny Shane Caper' to hear the same frame turn cold.