The title of Ep 5.18 is "Behind The Red Curtain" written by Erica Green and Eoghan Mahony, and directed by Chris Long.

 

The episode will feature a murder that interrupts a a musical production preparing for broadway. We will meet Deandra a once popular diva with a drinking problem, Alec the Shows manager, Bran the Musical Director, Jacinta the shows publicist and Polly, the murder victims foster mother.

 

@goforlocation have the title from the Call Sheet as "The Girl Who Played with Fire", not "There Will Be Blood". I think this is the episode with Lorelei.