Suggest an edit21:00Mystery Playhouse presents Howard Marion-Crawford in ' FOLLOW THE BLUE LIGHT'Light Programme Thu 7th Apr 1949, 21:00 on Light ProgrammeView in Radio Timesby A. W. Henderson Produced by Donald McWhinnieContributorsUnknown:A. W. HendersonProduced By:Donald McWhinnieRichard Price (' The Duke '):Howard Marion-Crawford' Smiler' Erhmett:William CollinsThe Checker:Geoffrey WincottSir Roger Willoughby:James RaglanNarrator:Donald Gray Source: Radio Times Suggest an edit