As they're looking into the downing of a treasure ship -- supposedly by a massive squid -- Sherlock Holmes (Ben Syder) and Dr. Watson (Gareth David-Lloyd) get word that a dinosaur is running amok in London. This take on the classic detective pits Holmes against a reckless mastermind who uses extinct predators for devious means. Taken aback by the news that his long absent brother (Dominic Keating) has materialized, Holmes remains resolved to crack this case of science gone mad.