The memoir focuses heavily on the psychological and physical torture used to force prisoners to denounce their faith, families, and beliefs.

"Urla Haita" is widely considered Purcarea’s breakthrough work. It is a novel that deals with loyalty, betrayal, and survival. The title itself is a warning: once the pack (the "Haita") starts screaming or howling, chaos is imminent. The novel explores the fragile ecosystem of a criminal group fractured by an internal secret.

The book never received massive promotional funding. Its growth is entirely organic. Readers who found it passed it to friends via USB drives, then via email, and now via requests for the . It is a book that reads like a Quentin Tarantino script—quotable, violent, and darkly comic.

You can hear the influence of Urla Haita in modern Romanian rap and trap music. Artists like Doktor and Nane have referenced "the howl of the pack" in their lyrics. The phrase "Nu mai urlă haita" (The pack no longer howls) has become internet slang for a group of friends falling out or disbanding.