Crocodile on the Sandbank - Miss Marple crossed with Indiana Jones!

In this adventure, the heroine decides to use her substantial inheritance to see the world. On her travels, she rescues a gentlewoman in distress - Evelyn Barton-Forbes, and the two become friends. The two companions continue to Egypt where they face mysteries, mummies, and the redoubtable Radcliffe Emerson, an outspoken archaeologist.