Waterfront Wolves

Some valuable pearls are stolen in China and transported to San Francisco. Jane Hampton learns that her father is the smuggler, and that police are on his trail. Under pressure, she takes the pearls to a Chinese man named Woo Fong.

The Mystery of Lost Ranch

Two men claiming to be scientists arrive in Arizona looking for Blair, a fellow scientist who disappeared while developing a death ray. The men hire Jim Wilson, who finds Blair living with his daughter on a ranch in an inaccessible valley near the Grand Canyon, where the scientist is testing his ray on birds and wild animals.