The title of next week's all-new Fringe episode is "Subject 9." But, according to the following promo, is focuses on topic number-one:

Will Peter Bishop make his long-awaited return?

Elsewhere, look for Walter and Olivia to make their way to Massive Dynamic in New York after the former discovers a powerful force that may be linked to his Cortexiphan experiments. Read through our review of Friday's "Alone in the World" and then enjoy the Fox trailer below: