Watch One Tree Hill Asleep At Heaven's Gate Season 8 Premiere Episode. Another fan favorite will be coming back this September with it's newest installment of episodes. Airing this coming September 14 is One Tree Hill Season 8 premiere episode. The gang returns from Utah with Brooke getting engaged with Julian. Haley gets excited with getting pregnant and shares the good news to Nathan. What else could be in stored in the upcoming One Tree Hill Season 8 first episode entitled Asleep At Heaven's Gate? Find out this Tuesday, Watch One Tree Hill Asleep At Heaven's Gate Season 8 Premiere Episode aired by the CW network at 8:00PM.