The second time Annie Wersching has played a serial killer. Her previous was also in a Nathan Fillion series Castle (2009) in seasons 6 & 7. In which it seems like she is playing almost the same character.
Annie Wersching appeared in 3 episodes of Nathan Fillion's previous series, Castle (2009) as plastic surgeon (and serial killer) Kelly Neiman.
Four guest actors appearing in this episode also guest acted in Castle (2009) : Michael Trucco (Det. Tom Demming), Annie Wersching (Dr. Kelly Neiman), Michael Cassidy (Nurse Greg McClintock) and Julian Acosta (Alfred Candela). Also while walking in the forest Rosalind Dyer (Wersching) said "I've literally peeled a woman's face off". That's what Plastic Surgeon Dr. Neiman did to her victims.
The first 30 minutes of this episode is a near copy of season 1 episode 4 of Bosch (based on the novel Echo Park). A serial killer gets a reduced sentence by leading the LAPD to bodies buried in Griffith Park. Both shows feature a politician running for office who insist the prisoner is allowed to do it. Both have news crews following along. Both find an excuse to partially uncuff the prisoner. Also, the prisoner is played by Annie Wersching, who also starred in the Bosch episode (as a cop).
Michael Trucco (ADA Del Monte) and Sarah Shahi (Jessica Russo from earlier in the series) starred together in Fairly Legal (2011).