Hon trodde det var han

Carl Deurell as Bengtsson David Erikson as portiern på fjällhotellet Sture Baude as Farfar John Elfström as poliskonstapel Carl Hagman as major Stålhammar Hilding Gavle as Svenska Akademiens sekreterare Paul Hagman as mannen som köper tågbiljett Tom Walter as Fimpen Wilma Malmlöf as Hulda Greta Tegnér as tågpassagerare Åke Claesson as bokförläggaren John Melin as Bomben Artur Cederborgh as Kisen Arne Lindblad as tågpassagerare Edvin Adolphson as Mark Storm / Kurret Anne-Margrethe Björlin as Elsa Selling Marianne Löfgren as fröken Nyström Ragnar Widestedt as fjällhotellets direktör Siegfried Fischer as Tjacket John Norrman as Svängbulten Naemi Briese as Carmen Agda Helin as majorskan Wiktor Andersson as Snoken Gunnel Wadner as ung gäst på fjällhotellet Carl-Gunnar Wingård as ingenjör Berglund Margareta Fahlén as telefonist på fjällhotellet Harry Ahlin as Smockan

Bertil Duroj Production Design Sven Rüno Original Music Composer Sven Stolpe Writer Carlo Keil-Möller Writer Per-Axel Branner Director Karl-Erik Alberts Director of Photography Edvin Adolphson Writer