Namibia - Episode 4

Kathy Austin has already survived two assassination attempts – saved both time
by intervention from her mysterious friends from outer space. Her superior,
Sir Charles, finds it difficult to believe her as to the origin of such
providential allies, but another incident, followed by a more official
meeting, eventually convince him. Informed of the terrible stakes that hide
behind the recent events, he sends Kathy back to Namibia with a new partner,
on a mission she seems unlikely to survive...