The violet keystone /
by Garth Nix.
- New York : Scholastic, 2001.
- 233 p. ; 20 cm.
- The seventh tower ; bk. 6 .
- Nix, Garth. Seventh tower ; bk. 6. .
"Lucas books."
Tal and Milla are only one step from death and evil is only one step from triumph. An old war is revived and the key to everything is the Seventh Tower.