Monstruos 3: The Ghosts of Latin America was one of the haunted houses featured at Halloween Horror Nights 2025 at Universal Studios Hollywood. Announced on June 27, 2025, the house was located in the Parisian Courtyard.  
  
Description  
Three ancient legends rise from the darkness—one wails, one bites, one deceives. Guided by La Muerte, guests encounter La Llorona, La Muelona, and La Siguanaba—spirits from Latin American folklore brought to terrifying life. From the chilling cries of La Llorona to the bloodthirsty grin of La Muelona and the sinister illusions of La Siguanaba, these myths blur the line between the living and the dead. La Muerte calls you forward, but you’ll wish you never answered.  
  
Settings  
Cemetery of the Lost  
  
Scareactors  
La Muerte ×2  
Decomposed Children ×2  
La Muelona ×4  
La Siguanaba ×3  
La Llorona ×6  
Child Victims ×2  
  
According to John Murdy, Monstruos was always envisioned as a trilogy. Each year, he gave his production designer the same direction for the façade: “It’s like we’re panning the camera to focus on a different part of the cemetery each year.” With Monstruos 3, fans are now able to see yet another section of the graveyard come to life.  
  
The Cemetery of the Lost serves as both the final resting place for the victims of these terrifying legends and as a supernatural portal into their worlds. This year, the journey expands across Mexico, Central America, and South America. Muerte, the skeletal caretaker, returns once more—this time with a new companion.  
  
This house marked the first treatment John Murdy personally developed for the 2025 event. During his research, Murdy explored the Spanish word for “darkness,” which inspired the name of a new minor character: Oscura, a spectral black cat revealed to be Muerte’s pet.  
  
The façade introduces guests to a previously unseen corner of the cemetery—the section where the children, slain by the monsters, are buried. Time and decay have left their mark: pastel paints on the graves have faded and peeled, flowers have withered to dust, and mold creeps across the stone markers. The only sign of life is a black cat, growling and hissing at the wind. From the shadows emerges Muerte, lantern in hand, warning us of the spirits responsible for this devastation—La Muelona, La Siguanaba, and La Llorona.  
  
Longtime fans of the Monstruos series know that Muerte always has a mischievous role. In previous years, he was seen digging graves or spelling his name with bones he unearthed. In Monstruos 3, however, he stalks guests throughout the maze, repeating a chilling refrain: “Are you afraid of the dark?”  
  
Reflecting on the addition of Oscura, Murdy explained: “We thought, well, our fans have gotten to know Muerte over the last few years, so why don’t we introduce something more about him that guests didn’t know? He has a pet. He has a little ghost cat that hangs out in the cemetery with him.”

Monstruos 3: The Ghosts of Latin America Haunted House at Halloween Horror Nights 2025 Universal Studio Hollywood