2.2 - Walkabout

Jetsetter, adventurer, and owner of a very unusual London bus, Lady Christina de Souza is travelling the globe and catching up with the rellies.

First, a treasure hunt with her reprobate father in the Indian Ocean. Then, a flying visit to the Australian outback in search of a lost Great Aunt...

But Sam Bishop and Jacqui McGee of UNIT are on her trail. As one reunion takes a dangerous turn, Christina has a hard decision to make – for the good of the family!

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