Allison's visions become a vital source of information to the authorities after samples of a deadly disease disappear. Meanwhile, Scanlon thinks he's ready to ask Lynn to marry him, but his plans don't go as smoothly as expected.

As the anniversary of Devalos's daughter's death comes to pass, Devalos is haunted by memories of the traumatic event. Meanwhile, Allison has dreams of the extreme measures Devalos went to in order to put his daughter's killer in jail, and how Devalos' past actions may have future consequences.