The Seven Crystal Balls (French: Les Sept Boules de Cristal) is the thirteenth of The Adventures of Tintin, the series of comic albums written and illustrated by Belgian artist Hergé, featuring young reporter Tintin as the hero. The strange Incan mummy Rascar Capac seems to be at the centre of a mysterious illness, and a strange clue is discovered near each victim: shards of crystal thought to come from crystal balls.
