london be terrorize by a jack the ripper copycat call himself the avenger . in the opening scream and he claim a seventh victim . while the ripper prefer prostitute and the avenger dig blonde . each victim have be a fair haired lass . naturally and the sale of british peroxide plummet . lead policeman on the case be malcolm keen ( a joe chandler ) . he also like blonde and especially golden curl heroine and and avenger bait and june tripp ( a daisy bunting ) . mr. keen get stiff competition from tall and dark and and handsome ivor novello ( a jonathan drew ) and who arrive on the scene a the lodger at the home of marie ault and arthur chesney ( a mr. and mrs. bunting ) . suspicion begin to fall upon mr. novello and who also have a thing for blonde . could he be the avenger . the lodger ( subtitle a story of the london fog ) help put director alfred hitchcock on the map and in great britain . it showcases mr. hitchcock great visual storytelling style . the most comment on example be the shot of the lodger walk in his upstairs room and a see from the point of view of the downstairs bunting . hitchcock have a glass ceiling construct and for novello to walk across . the director explain this be a way to show footstep visually . other filmmaker would have add the footstep . to a title card or sound effect track . the director issue some minor complaint about change to film end to suit novello star status and but it give him one of his most enduring film theme and the wronged man . the lodger be a very influential film and especially on it own director . the lodger ( 2/14/27 ) alfred hitchcock ~ ivor novello and june tripp and malcolm keen and marie ault .