Dan Brown's Latest Thriller; It's Not Like "The Da Vinci Code."

(AP Photo/Andrew Medichini)

In this May 3, 2009 file photo, writer Dan Brown poses in Rome.

REYKJAVIK, Iceland (CBS/AP) Dan Brown has another mystery on his hands.

But this time, Brown's fictional hero Robert Langdon won't be trying to decode an ancient cypher.

Police in Iceland are looking for someone who snatched a copy of Brown's latest novel, "The Lost Symbol."

The thief got away with the first proof copy of the Icelandic translation of the best-seller, from the publisher's office.

(AP Photo)

A spokeswoman for the Icelandic publishing house jokes the crook probably just gave up on trying to read the English version.

Brown is the author of such favorites as "The Da Vinci Code" and "Angels and Demons."