NIGHTMARE ALLEY, the musical, played in Los Angeles at the Geffen Playhouse from April 13-May 23, 2010. It was based on a book and score created by Jonathan Brielle in 1966, which played off-Broadway for just 15 performances.
Reviews of the 2010 run starring James Barbour (and directed by Gilbert Cates) were mixed; here is a sample of what appeared in the local press during its run.
Some of the reviews contain photos of the set(s) constructed for the play at the Geffen.