ɐlˈɔŋ wɪððə fˈoːɹhˈʌndɹɪd blˈoʊz ænd æ dˈʌbəl tˈʊɹ baɪ klˈɔːd tʃˈæbɹɑːl, hˌuː pɹədˈuːst ðə sˈaɪn ʌv lˈiːoʊ, ɪt kˈaʊnts æz wˈʌn ʌvðə fˈɜːst fˈɪlmz ʌvðə fɹˈɛntʃ nˈuː wˈeɪv.
Along with The 400 Blows and À Double Tour by Claude Chabrol, who produced The Sign of Leo, it counts as one of the first films of the French New Wave.