Ten Little Dunces

Cover art for a play by Eddie McPherson. The synopsis goes something like this:
Ten dunces have been invited to an old house on Dunce Island to be murdered. One by one they are done in according to a silly nursery rhyme hanging over the fireplace. Because they’re not the brightest bulbs in the box, the poor victims are murdered rather easily by such things as vacuum cleaner hoses and live alligators. After several murders take place, they become suspicious of each other. But when the last person bites the dust and there’s no one else on the island, the question remains: Who the heck did all the murdering?? A fun parody of one of Agatha Christie’s most popular mystery novels.