TimeRiders: The Doomsday Code

When a British computer hacker finds his name coded into a centuries-old manuscript, TimeRider Maddy recognizes it as the same message she had also been sent. Sure it must be communication from other TimeRiders agents, she sends Liam and the two support units back to Robin Hood''s time to search for the fabled document-possibly the Holy Grail. But as a war begins to brew between King Richard and h...