Murder on the Blackboard

Edna May Oliver

Hildegarde Withers

제임스 글리슨

Police Insp. Oscar Piper

Bruce Cabot

Stevens

Gertrude Michael

Jane Davis

Regis Toomey

Detective Smiley North

Edgar Kennedy

Detective Donahue

Tully Marshall

MacFarland

Jackie Searl

Leland

Frederick Vogeding

Otto (as Fredrik Vogeding)

Barbara Fritchie

Louise