Meanwhile, as Laurel digs a grave, Michael questions her about the spooky goings-on in Mallory. Everyone has to tell Laurel their secrets, see. When Michael presses for more answers, what he learns is that Laurel is digging her OWN grave. Those secrets? Yep, she’s taking them to heaven with her. It's apparently part of the deal of keeping Mallory safe from angels - someone has to sacrifice themselves every few years.