 
<translate> Ozi dị mkpa bụ: Oge nke anọ bidoro igosi na Ọktọba 10, 2017, na The CW. Ya mere azịza ikpeazụ bụ Ọktoba 10, 2017. <eng> The relevant information is: The fourth season began airing on October 10, 2017, on The CW. So the final answer is October 10 , 2017. 