Episode aired a day after Lee Thompson Young's death. Actor had been recently diagnosed with bipolar disease and committed suicide on August 19th, 2013.
The initial scene, with the teacup and saucer, is the same M.O. of the East Area Rapist (aka The Golden State Killer) who was active in the Sacramento area between 1976 and 1979.
Many of the episode titles are also the names of songs; "No One Mourns the Wicked" is a song from the musical Wicked. In a touching twist, given the news of Lee Thompson Young (Barry Frost)'s death the day before this episode aired, the song is sung by a character who has just lost her best friend.