Ep 3. Headhunters

In season 1 episode 3 of Gravity Falls, titled "Headhunters," Dipper and Mabel visit a wax museum in town and meet its owner, who happens to be a conspiracy theorist convinced that the world is filled with supernatural creatures. Mabel takes an immediate liking to the wax figures, but Dipper remains skeptical of their authenticity.

As they leave the museum, they come across a poster for a wax figure unveiling ceremony the following night. The museum owner tells them that the wax figure of the town's founder is the most lifelike one yet, and that he poured his heart and soul into creating it. Dipper and Mabel agree to come to the unveiling ceremony the next night.

When they arrive at the museum the next night, they see that the wax figure of the founder has been vandalized and decapitated. The police are called in to investigate, and they suspect that the culprit was one of the museum's many disgruntled employees.

Dipper, however, suspects that the culprit may be a supernatural creature, and he decides to investigate further despite Mabel's protests. He soon discovers that the wax figure of the founder was actually a real person who was turned into wax by the museum owner in order to make a perfect wax figure.

As Dipper continues to investigate, he becomes the next target of the mysterious culprit and finds himself in danger. With Mabel's help, he manages to unmask the culprit and save the day.

Overall, "Headhunters" is an exciting and suspenseful episode that showcases the show's blend of supernatural elements and humor. It also continues to develop the relationship between Dipper and Mabel, as they work together to solve the mystery and save the day.