Peter Purves appears as Morton Dill. He would later join the series as companion Steven Taylor at the end of the serial.
This episode "Flight contains a rather morbid first (remembering that the series was originally considered a children's programme and still is marketed towards children as of 2011): the first depiction of the death of a child. This refers to the baby being carried by the woman who jumps off the Mary Celeste (and, though no deaths occur on-screen, history records that the passengers of the vessel were never found).
This episode takes place in New York City in 1966 and aboard the Mary Celeste in November 1872.
This episode was watched by 9 million viewers on its original transmission.
This was the first of two William Hartnell serials that feature David Blake Kelly. The other was "The Smugglers".