The Captive Wife is now available through about half a dozen eBook retailers throughout the world, the most prominent being Amazon (both the US and UK sites), eBooks.com and Kobo.
And exciting news that At the end of Darwin Road and The Book of Secrets have been selected for conversion into e-books too. They should be available soon.
A special hurrah for The Book of Secrets, that has never been out of print in the 25 years since it was first published and has just gone into another paper reprint with Vintage, Random House. Thanks RH for standing by this book for all these years.