- HD 1080
- Runtime: 97m.
- Status: Released
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- Languages: en
- Country: South Africa, United States of America
- Director: Florian Baxmeyer
- Stars: Chancellor Miller, Nick Price, Cameron Monaghan, James Faulkner, Jonathan Pienaar
- keywords: private detective
- Production_studio: Saltire Entertainment, Studio Hamburg International Production (SHIP), Two Oceans Production (TOP)
- The The Three Investigators and the Secret of Terror Castle is featured in the top rankings of 2009
- #18 in Top Family Movies of 2009
- #26 in Top Adventure Movies of 2009
- #30 in Top Mystery Movies of 2009
A new case for the cult detectives! Not by coincidence, a mysterious videotape falls into the hands of Jupiter Jones, Pete Crenshaw and Bob Andrews during Jupiter's birthday party in Rocky Beach. On it is a recording of Jupiter's long dead parents. In their message they want to communicate to their son the key to an especially tricky riddle.