The Secret Adversary

The Secret Adversary (1929) is a British silent film (with synchronized music) based on the Agatha Christie novel. Under the rule for films released between 1928 and 1963, copyright must be registered and then renewed in the 28th year to remain protected in the United States. No record of a US copyright registration or renewal was found in the Stanford Copyright Renewal Database or the Library of Congress Catalog of Copyright Entries for this production. While foreign works can sometimes have their US copyright restored under the Uruguay Round Agreements Act (URAA) if they were still under copyright in their source country on January 1, 1996, the United Kingdom's copyright term for films released in 1929 was 50 years from publication/creation (under the 1911 and 1956 Acts). Consequently, the film's UK copyright expired by 1980. Because it was in the public domain in both the US (due to non-renewal) and its country of origin (due to term expiration) prior to 1996, it did not qualify for URAA restoration and remains in the public domain. Note: generated without live web grounding (the grounded research engine was unavailable). Verify the cited sources independently before relying on this determination.