The magnificent Will Hay re-creates his vaudeville characterization of a supercilious schoolmaster in Good Morning Boys. Donning pince-nez and academic garb, Hay is cast as Dr. Benjamin Twist, headmaster of a seedy boarding school. Unbeknownst to Twist, an escaped convict has taken up residence in the school, disguised as a rather mature student. Also unbeknownst to Twist, his school is being used as a rendezvous for a gang of art thieves who plan to steal the Mona Lisa. Perennial Will Hay stooge Graham Moffatt plays an overweight undergrad named Albert, but the inimitable, toothless Moore Marriott (aka "Harbottle") is conspicuous by his absence.
by Hal Erickson synopsis