While the majority of Episode 12, "In Dreams," focused on Grace entering a strange dream sequence, it also revisited a significant plot point first brought up in early Season 6 -- the key. Since taking it off a bounty hunter, Morgan's been wearing the mysterious key around his neck. However, in the conclusion of "In Dreams," he reluctantly hands it over to Riley, a high-ranking member of The End is the Beginning cult, and this decision could have some disastrous consequences.