1940s Hollywood was an era of decadence and director Theodore Langley was its king. Paired with Eleanor Hayes as his lead actress, Theo ruled the Golden Age of Hollywood. That ended when Eleanor's mangled body was discovered in Theo's rose garden and he was charged with her murder. The case was thrown out before it went to trial and Theo fled L.A., leaving his crawling estate, Windhall, to fall into ruin. He hasn't been seen since.

Decades later, investigative journalist Max Hailey, raised by his gran on stories of old Hollywood, is sure that if he could meet Theo, he could prove once and for all that the famed director killed his leading lady. When a copycat murder takes place near Windhall, the long reclusive Theo returns to L.A., and it seems Hailey finally has his chance.

When Hailey gets his hands on Theo's long-missing journals, he reads about Eleanor's stalkers and her role in Theo's final film, The Last Train to Avalon, a film so controversial it was never released to the public. In the months leading up to her death, something had left her so terrified she stopped coming to work. The more Hailey learns about Avalon, the more convinced he becomes that the film could tell him who killed Eleanor and why she had to die. But the implications of Avalon reach far beyond Eleanor's murder, and Hailey must race to piece together the murders of the past and present before it's too late.