Virginia Masters (Blair Brown) quotes the line, "There are more things in Heaven and Earth than are dreamt of in your philosophy," which is taken from Act 1 Scene 5 of William Shakespeare's "Hamlet."
Robert Stanton has played four different roles over the course of the series:
- Episode 2.2 The Wages of Love (1991) - Jed Knox.
- Episode 8.4 Harvest (1997) - Jacob Sutter.
- Episode 13.19 Seer (2003) - Tim Grayson.
- Episode 17.2 Avatar (2006) - Douglas Preston.