L'Inconnue De La Seine

How well would a teacher's admission in front of a school assembly, that he and some of the congregation had touched lips with a 100 year old deceased lady go down with the pupils in a school assembly? Nothing untoward here. All can be explained as the story of the unknown lady of the River Seine is revealed. This leads to a much older story focussing on ancient Egyptian and Phoenician attempts to circumnavigate the continent of Africa.