In the teaser, Sir Erik Rossman has a sudden violent outburst. During this, he recites provocative and incendiary fragments from the notebook of William Blake (1757-1827). His wife, Lady Rossman, calms him with the first verse of another Blake poem. He recognizes the poem and recalls the title: "On Another's Sorrow" (from "Songs of Innocence").
The wrecked airplane is an Aeronca 15AC Sedan that was built in 1948 with manufacturer's serial no. 15AC-161 and registered in the United States as N1147H. Curiously, the Federal Aviation Administration's website shows that plane's registration number as having been canceled on December 28, 1954, due to it having been destroyed, nearly 20 years before this episode was filmed. This plane might have been a longstanding wreck that was purchased for use in this production.