Doctor Who: The First Doctor Adventures S01 E06 Tick-Tock World

When disaster befalls the TARDIS, its occupants find themselves in a bizarre location, somewhere between space and time. Desperate survivors hide among ruins, greedy scavenging creatures hunt new prey, and ghosts scream out warnings across time. All the while, a mysterious woman watches the TARDIS crew, knowing, as sure as tock follows tick, that a terrible fate awaits them...