La Muselivre

A great literary mystery has been solved after Danish police arrested four people suspected of dealing in rare books worth up to $50 million which were stolen from Denmark's Royal Library more than 30 years ago.
The library said on Thursday the books dated as far back as the sixteenth century and included original works by historical notables such as Thomas More, John Milton, Immanuel Kant, Martin Luther and the Danish astronomer Tycho Brahe.
The books were originally stolen in the 1960s and 1970s by a library employee, now deceased. His widow and three others sold some of the precious books but were caught out when they tried to sell a 500-year-old tome at London auction house Christie's.

(Via The Elegant Variation)