Aztecs (episode 1)
The Temple of Evil
There's the TARDIS toy taking off again.
And suddenly, a death mask! And the words "Written by John Lucarotti"
which suggest high promise. The TARDIS has landed in a tomb which
Barbara immediately recognises as an Aztec priest. They've landed in the
time period of Barbara's favourite school subject! Although if the chap
was buried in 1430 it's a bit late in the day to be "early Aztec".