Editing Three Investigators (section)

==Adaptations, References and 2025 Series==

in 1984 the first two stories from the series were adapted into heavily abridged audioplays by [[Edward Kelsey]] and released by Rainbow Communications; both were directed by [[Tony Bilbow]].<ref>{{Cite web|url=https://www.discogs.com/label/214952-Rainbow-5?page=1|title=Rainbow (5) &#124; Discogs}}</ref>

In Germany, the franchise has also been adapted into [[audioplay]]s and [[graphic novel]]s.

In 2007, a Three Investigators movie, ''The Three Investigators and the Secret of Skeleton Island'', was released in Germany, starring Chancellor Miller as Jupiter, Nick Price as Pete, and [[Cameron Monaghan]] as Bob. It was followed in 2009 by ''The Three Investigators and the Secret of Terror Castle''. Although adopting the same titles as two of the novels, and some of the characters, the stories in the films are significantly different from those in the books on which they are based.

The 2021 computer game [[ELEX|ELEX II]] features the mission 'Hitch and the Three Investigators', an homage to the book series.

In 2020 Elizabeth Arthur (daughter of series creator [[Robert Arthur Jr.]]) announced a continuation of the series to be set in contemporary times.  Further details revealed the series to be a set of twenty-six novels (one for each letter of the alphabet), set two years after The Secret of Terror Castle.  The books are thematically linked as one larger arc.  The first three books were made available in [[eBook]] format in March 2025.