Suggest an edit20:00Mystery Playhouse presents Howard Marion-Crawford in 'FOLLOW THE BLUE LIGHT'Light Programme Thu 7th Jul 1949, 20:00 on Light ProgrammeView in Radio Timesby A. W. Henderson Other parts played by Janet Bruce and Alastair Duncan Produced by Donald McWhinnieContributorsUnknown:A. W. HendersonPlayed By:Janet BrucePlayed By:Alastair DuncanProduced By:Donald McWhinnieRichard Price (' The Duke '):Howard Marion-Crawford' Smiler ' Emmett:Peter GarstinThe Checker:Geoffrey WincottSir Roger Willoughby::james RaglanNarrator:Donald Gray Source: Radio Times Suggest an edit