Richard DreyfussBoy Wonder Jessica HarperCathy Cake / Music Consultant Veronica CartwrightHarlene Stephen DaviesRex, the Wonder Dog John ByrumDirector / Screenplay Harry BennAssociate Producer Josie MacAvinSet Decoration Denys N. CoopDirector Of Photography Richard PointingWardrobe Supervisor Shirley RussellCostume Design Robin GranthamMakeup Artist Mike HigginsSecond Assistant Director Barry LangleyDirecteur adjoint Colin BerwickAssistant Editor Ken NightingallBoom Operator Jessica HarperCathy Cake / Music Consultant Bobby BluesProduction Accountant 
