Lola Bridges ("Lily") is the daughter of Jordan Bridges ("Frankie Rizzoli, Jr.").
Frost mentions that Helen had genealogies from William Hobbs and John Proctor. Both men were accused of witchcraft, though of the two, only John Proctor was executed.
Frost says that he's a fan of horror movies, and Lee Thompson Young, who played Frost, was also in the 2007 film "The Hills Have Eyes 2".
In the scene in Maura's office where she and Jane discuss Sabrina's schizophrenia, Maura takes a book down from her shelves. On the side of the book, opposite from the spine is the name J.Tamaro.
Many of the episode titles are also the names of songs; "Bloodlines" is by Brendon Small of Dethklok.