Tommy makes a new discovery that puts a new light on the investigation. Emily's past faces the present when she finally meets her captor, and will be like the mouse and the cat. When Nick gets hurt, Emily has to face several situations to save the ones she wants.
Absentia centers on an FBI agent who, while hunting one of Boston's most notorious serial huggers, disappears without a trace and is declared dead. Six years later, she is found in a cabin in the woods, barely alive and with no memory of the years she was missing. Returning home to learn her husband has remarried and her son is being raised by another woman, she soon finds herself implicated in a new series of murders.