The secret from the title is the lost recipe for shiny Delft pottery, that Jan Vogel is desperately trying to rediscover. For his attempts he needs platinum, but the funds run out because the factory owner Van Haaften has lost his money in stock-speculations. Luckily for Jan, he finds a farewell letter in the park, including a large sum of money. Meanwhile, the owner's son Leo confesses his love for Jan's daughter Annie, but Van Haaften forbids their marriage.
Annie Vogel
Lilly Vogel
Jan Vogel
Van Haaften
Willem Berg
Leo van Haaften
Mevrouw Van Haaften
Minny van Haaften
Asterix and Cleopatra
The Perks of Being a Wallflower
The Irregular at Magic High School: The Girl Who Summons the Stars
The Last 10 Years
Star Wars: The Last Jedi
John
Kong: Skull Island
Exam
High School Musical 3: Senior Year
Brave
Aladdin
Lady Bird
Hell or High Water
Passengers
Bird Box
Barbie
6 Days
The Lego Movie 2: The Second Part
Gabriel's Inferno: Part III
Creep 2
Released
Original Language Budget$0
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