The Mystery of the Brobdingnagian Beast

The Three Investigators find themselves on a dangerous mission to uncover the truth of what’s happening on a film being shot in Sonoma, California—location of the historic Bear Flag rebellion. Pete Crenshaw's father, a set construction manager, enlists the team to help when strange events begin unfolding on the set of Bear Valley, a movie about the controversial explorer and politician John C. Frémont.

From the moment the boys arrive, they're thrust into a chaotic mix of violence, protests, and intrigue. A mysterious group called OUTLAW is determined to shut down the film. As its members push against police barricades in their black masks, tensions run high between two feuding historians - Phillipa Paxton and Daniel Hernández – with competing views on Frémont's legacy.

The team faces explosive threats, the masked mob, and a reenactment of the past with a twist: a man who believes he is the reincarnation of a 19th-century Pomo bear-doctor. But the deeper they dig, the more they realize that what seems like a simple protest is just the surface of a much darker, more dangerous conspiracy. Phillipa Paxton puts The Three Investigators on the trail of a piece of Frémont memorabilia, and their suspicions are aroused when it turns out that someone else has been searching high and low for the same item.

Who is behind the mysterious keg of gunpowder that's set off on set ? Who slashed Dr. Paxton's tires and left ominous signs of their presence near her garage ? What's the connection between a Frémont artifact that reportedly burned in the Great San Francisco Fire of 1906 and a strange letter supposedly signed by the famous frontiersman, Kit Carson ?

1. An Invitation To Trouble
2. The Mystery Begins
3. On The OUTLAW Trail
4. A Prodigious Opportunity
5. Dueling Historians
6. Fire In The Hole!
7. The Serbian Connection
8. An Important Deducation
9. Suspicious Behavior
10. An Ingenious Plan
11. An Amazing Find
12. Mallory Aces The Test
13. Hitting Pay Dirt
14. The Trap Is Sprung
15. A Brobdingnagian Beast