"Lots of twins have a special connection - being able to finish each other's sentences; sensing what the other is thinking; perhaps even knowing when the other is in trouble or in pain - but for 12-year-old twins, Matt and Emily Calder, the connection is beyond special. Together, the twins have extraordinary powers - they are able to bring art to life, or enter paintings at will."

The audiobook, read by John Barrowman, is also available for download from Amazon or from AudioGo. 

Ebook also available from Simon and Schuster.

Download ebook from Simon and Schuster

Order Hollow Earth from Amazon.co.uk

Order Hollow Earth from Amazon.com

Download the enhanced eBook from Amazon.co.uk

Download the Audiobook from AudioGO UK

Please visit the Hollow Earth website for more fun and games.  

Milwaukee Journal Sentinel Video Interview with Carole & John

 Articles about Hollow Earth:

PopMatters- October 2012
Minneapolis Star Tribune- October 2012

Primary Times - April 2012

Cultbox interview with John and Carole - April 6th 2012

Ed on the Web - March 2nd 2012

The Book Zone (For Boys) - February 27th 2012

Sunday Express - February 13th 2012

Bookwitch - February 13th 2012

Scotland on Sunday - February 12th 2012

Books for Keeps - February 7th 2012

Daily Record - February 7th 2012

Kent Online - February 3rd 2012

PopMatters - February 2nd 2012

Reviews in Time and Space - February 2nd 2012

Millport - January 26th 2012