This show was partially inspired by the life of Ferdinand Demara, Jr., a genius with an eidetic memory who could master any skill just by reading a book about it.
When asked in an interview what it was like working with Michael T. Wiess, Andrea Parker was forced to admit that she barely knew him. Due to the premise of the series, Miss Parker chasing Jarod, and Jarod always being one step ahead of her, their adult characters only appear in scenes together in eight episodes, besides as children In flashback sequences. Their characters later appear together in scenes in both the movies.
At one point in the series, Miss Parker and Broots stand trapped in an elevator of The Centre, where Broots realizes about some shot holes in the rooftop, made when Miss Parker's mother was assassinated many years ago. It is based on the failed coup d'etat that happened in February 23, 1981, in Spain (commonly known as "23F"), when Antonio Tejero, in those times, Lieutenant Colonel of the Civil Guard, attempted to topple King Juan Carlos I, to cancel the democracy, and return the country to the dictatorship (missed after General Franco's death in 1975). Tejero shot several times against the rooftop of the Congreso de los Diputados (Congress of Deputies), where the coup d'etat happened. The bullets remained there, on purpose,, as a remember of the event until September 11, 2013, when a renovation accidentally removed them.
Most of the main characters have only a first or last name with the other name either unknown or assumed.
Jon Gries guest-starred as Broots for over sixty episodes, before becoming a regular in season four.