Notes on "Haunted":

•  "...the dude with the horns" - points if you get the in joke.

•  "...headed for the T and Cambridge..." - specifically the Red Line to Harvard.

•  "...Brattle Books and the Harvard Bookstore" - West Street off Tremont and in Harvard Square, respectively.

•  "...A woman shrieked in pain... - "Blind Spot," Season 6.

•  "...an undercover detail..." - "Untethered," Season 7.

•  "...after discovering her husband dealt drugs..." - see "Kintsugi" and "Quiver."

•  "...Ray Wiznesky's suicide..." - "Siren Call," Season 6.

•  "...Frances Goren's death and serial killer Mark Ford Brady's execution..." - "Endgame," Season 6.

•  "Mom said Jackie had one just like it." - Jacqueline Bouvier Kennedy, wife of slain President John F. Kennedy, was a fashion influencer for years in the 1960s, even after her husband's death and her remarriage to Aristotle Onassis.

•  "...Ronni Heller and Carl Rigman..." - see "Legacy" and "Disclosure."

•  "...Midnight Offerings..." - starring Melissa Sue Anderson from Little House on the Prairie as Vivian Sutherland and Mary Beth McDonough (Erin on The Waltons) as Robin Prentiss. Guess from the names who's the "bad witch" and the "good witch."