Tim (Sean Scully) comes over to Amsterdam to visit his penfriend Piet (Jacques Verbrugge). An Englishman operating as a tourist guide is a diamond-smuggler and the boys foil his plans in a boat chase.
| Year | 1961 |
| Country |
UK |
| Director |
Derek Williams |
| Casting |
Sean Scully, Jacques Verbrugge, Sandra Spurr, Walter Randall, Thom Kelling, Riek Schagen, Jean Lemaire, John Soer, Paul Ostra, Sacco van der Made, Gerard Doting, Frans Kokshoorn, K. Brouwer, John Roden |
| Genre |
Adventure, Crime, Family |
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