Cesare Danova and Elyssa Davalos, appearing here as adversaries, worked together a year earlier in The Mexican Connection, a season 1 episode of Charlie's Angels in which they portrayed father and daughter.
It's mentioned there was a very large interest in Egyptian artifacts at the time. The Metropolitan Museum of Art in the USA was hosting an exhibition of artifacts from the tomb of King Tut at the time this aired. The exhibition ran from 1976 through 1979.
At the end of the episode Frank mentions they are going to Kenya. The next episode is Mystery of the African Safari.