Fillmore! (2002)

S1E10 Masterstroke of Malevolence

Mrs. Lawson's outing to the Modern Contemporary Natural History, Art, Science and Miniature Museum takes a dark twist when a mustache is scrawled across the invaluable painting "The Lobster Man at Port." Fillmore, Ingrid, and O'Farrell must race against time to uncover the vandal and protect the artwork, but with every attendee under suspicion, the pressure is on to find the real culprit before it's too late.