Fly-by-Night (also known under the alternative title Secrets of G32) is a 1942 American thriller/screwball comedy film directed by Robert Siodmak, starring Richard Carlson and Nancy Kelly. It was Siodmak's second American film. The film finds a young doctor tracking down a Nazi spy ring in an effort to clear his name after being charged with the murder of a scientist. Cast Richard Carlson as Dr. Geoffrey Burton Nancy Kelly as Pat Lindsey Albert Bassermann as Dr. Storm Miles Mander as Professor Langner Edward Gargan as Officer Charlie Prescott Adrian Morris as Officer John Prescott Martin Kosleck as George Taylor Walter Kingsford as Heydt Cy Kendall as Dahlig Nestor Paiva as Grube Oscar O'Shea as Pa Prescott Mary Gordon as Ma Prescott Arthur Loft as Inspector Karns Marion Martin as Blond nurse Clem Bevans as Train station watchman References External links IMDB profile Fly by Night (1942) - filmaffinity 1942 films Films directed by Robert Siodmak 1940s thriller films American thriller films 1940s English-language films American black-and-white films Paramount Pictures films Films produced by Sol C. Siegel Films with screenplays by F. Hugh Herbert 1940s American films