Back up to: Season 9
6/6 With the crystal of Kronos in his possession, the Master releases the Chronovore.
5/6 In Atlantis the crystal of Kronos is protected by a guardian who is half man, half beast.
4/6 The Master heads to Atlantis but he and the Doctor confront each other in the time vortex.
3/6 The Master uses TOMTIT to summon threats from the past to attack UNIT.
2/6 After a disastrous attempt to summon Kronos, the Master prepares to use TOMTIT once again.
1/6 The Master is using a device called TOMTIT to summon a creature from beyond time.