
Four cousins meet a new friend who has strange powers over all the animals on Whispering Island. After discovering the crusader's treasure, they are imprisoned in a flooded dungeon.
| Release Date | May 1, 1964 | |
|---|---|---|
| Status | Released | |
| Original Title | Five Have a Mystery to Solve | |
| Runtime | 1h 36min | |
| Budget | $20 | |
| Revenue | — | |
| Language | — | |
| Original Language | English | |
| Production Countries | United Kingdom | |
| Production Companies | Children's Film Foundation (CFF) | |