English schoolboy and his Dutch pen friend chase a diamond smuggling gang in Holland.
Sean Scully
Jacques Verbrugge
Sandra Spurr
Walter Randall
Thom Kelling
Riek Schagen
Paul Ostra
Sacco van der Made
Jean Lemaire
John Soer
Gerard Doting
Frans Kokshoorn
K. Brouwer
John Roden
