The doomsday code
By: Alex Scarrow
Series: TimeRiders
Publisher: Walker Books for Young Readers
Published: 2012
Place of publication: New York
Language: eng
ISBN-13: 9780802733849
Subjects: JUVENILE FICTION / Action & Adventure / General; Robin Hood (Legendary character); Fiction; Science fiction; Middle ages; Grail; JUVENILE FICTION / Science Fiction; Time travel
Description: "The TimeRiders travel back to Robin Hood's Middle Ages to search for the mythical Holy Grail and to stop the future from changing"--