’The Heroes of Olympus’ series.’The complete set of the series all UK 1st editions. Plus the US 1st edition of the guide to the series written by the author 1. ’The Lost Hero’ by Rick Riordan.’Published by Puffin. 2010. UK 1st edition. The book is in fine condition with no marks or inscriptions. The dust wrapper is in fine condition and is not price clipped. 2. ’The Son of Neptune’ by Rick Riordan.’Published by Puffin. 2011. UK 1st edition. The book is in fine condition with no marks or inscriptions. The dust wrapper is in near fine condition and is not price clipped. There is very light rubbing to the top of the front cover and spine. 3. ’The Mark of Athena’ by Rick Riordan.’Published by Puffin. 2012. UK 1st edition. The book is in fine condition with no marks or inscriptions. The dust wrapper is also in fine condition and is not price clipped. 4. ’The House of Hades’ by Rick Riordan.’Published by Puffin. 2013. UK 1st edition. The book is in fine condition with no marks or inscriptions. The dust wrapper is in fine condition and is not price clipped. 5. ’The Blood of Olympus’ by Rick Riordan.’Published by Puffin. 2014. UK 1st edition. The book is in fine condition with no marks or inscriptions. The dust wrapper is in fine condition and is not price clipped. 6. Percy Jackson & The Olympians. The Demigod Files’ by Rick Riordan. Published by Disney-Hyperion Books. 2009. US 1st edition. No dust wrapper as issued. The book is in fine condition. We have other titles featuring Percy Jackson from other series.