The Pirates! in an Adventure with Communists is the third book in The Pirates! series by Gideon Defoe to feature his hapless pirate crew. It was published in 2006 by Orion Books ().
This book follows the adventures of the Pirate Captain and his crew through Paris and LondonâÂÂaccompanied by Karl Marx and his sidekick Friedrich EngelsâÂÂas they attempt to clear the communists' good name after it is sullied by Richard Wagner and his malevolent benefactor.