Ashfordly Hall opens its doors to the public with guided tours by Vernon Scripps. During one of the tours master art thief George Woodford sneaks away and hides in his lordship's wine cellar, where he makes himself comfortable until nightfall. Under the cover of darkness he then removes four valuable sketches by the famous English painter John Constable. Woodford is recognized on some press photos, but when the police want to question him, someone has beaten them to it, gagged the old man and knocks PPC Nicholson down. Of the sketches there is no trace. Not even in Woodford's hiding place. Somebody "accidentally" locks PPC Nicholson in one of the cells and then "forgets" all about it till next morning. A wise move because then he cannot make any mischief.