Les pirates du silence, written and drawn by Franquin, is the tenth album of the Spirou et Fantasio series.

The title story, and another, La Quick Super, were serialised in Spirou magazine before both were published in one hardcover album in 1958.

Unable to reach the Count by phone, they drive to Incognito City and have an unpleasant traffic encounter with Juan Corto Dos Orejas, leaving them with a bad impression and a small object found on the ground.

Further encounters with thugs and suspicious events slowly expose a fiendish plot, involving the kidnapping of the Count of Champignac.

This album most famously reveals another of Marsupilami's remarkable attributes, namely its ability to perfectly mimic human words.