To avoid an apocalypse eruption, Jack struggles to bring together Vera (the know-how) and Alyssa (the power) to close it, but Alyssa demands a price from Vera - a rare incantation with a lethal side effect. This also marks the best time to retrieve Lilith from the demon realm but requires a sacrifice Nicole may not be willing to accept. Meanwhile, Midnight, taking possession of his host, has it in for Silverback.
—statmanjeff