Wrong head, paperback/franquin

A meaningless little spat is keeping Spirou and Fantasio apart that day, when the young bellboy sees his friend in the company of a mysterious neighbor.

Shortly afterward, a jewelry shop is robbed, and the owner identifies Fantasio, who has come to cover the event for his newspaper, as his aggressor.

When the very next day a priceless Egyptian mask is stolen live on TV by .

Fantasio, Spirou is left with little choice but to investigate….