databank
900 year diary
crystal of kronos
A crystal that was worshipped in Atlantis by the followers of Kronos. In fact it was a prison containing the Chronovore itself. The Master transported the crystal through time using TOMTIT, releasing Kronos. Unable to control the creature, the Master recaptured it and took the crystal back to Atlantis. Again Kronos escaped and sunk the whole civilisation beneath the sea, killing everyone there. Presumably the crystal was also destroyed. Kronos escaped back to the space time vortex and tried to enslave the Master in turn. The Doctor begged for his freedom which Kronos granted.