The Shalott trilogy, by Felicity Pulman and published by Random House has now been re-released by Louis Braille Audio as a set of CDs.  The Shalott trilogy tells the story of five Australian teenagers who go back in time to rewrite a legend and save the life of 'the Lady of Shalott' (Elaine of Astolat).  In doing so, they hope also to avert the doom of Camelot.  Instead, they rewrite their own lives with ramifications for the future.