"Ronde de Nuit" is an police inspector story of 10 pages, published for the first time (in black and white) by the french magazine Pilote, number 17' in 1975's October. The plot's writer was François Truchaud, who, perhaps as a counterposition to the glamorous Friday Foster, thought up an unorthodox, rude, black detective, in a dirty and oppressive New York. The front cover (in colour) was also illustrated by Jordi.