Murder on the Blackboard (1934)

(Hildegarde Withers)

(Inspector Oscar Piper)

(Addison)

(Jane Davis)

(Detective Smiley North)

(Detective Donahue)

(Mr. MacFarland)

(Leland Stanford Jones)

(Otto Schweitzer, the Janitor (as Fredrik Vogeding))

(Louise Halloran)

(Dr. Max Von Immen)

(Detective McTeague)

(Dr. Levine)

(Bearded diner (Uncredited))

(School boy (uncredited))

(Diner Counterman (uncredited))

(Policeman (uncredited))