People
A secret's worth depends on the people from which it must be kept.
— Carlos Ruiz Zafon
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
A secret isn't precious just because it's hidden. Its weight depends on who mustn't find out. Zafon's line suggests the very same fact can be trivial in one company and dangerous in another, so the audience decides what keeping it is worth.
Context reviewed