Baffling Mysteries #10

"Nightmare Flight" follows Ruth Lawson, who is grief-stricken months after her fiancé Hal Chadwick dies in an airline crash, until a mysterious figure claiming to be Hal visits her, insisting she help him escape from a cursed castle. A second story involves Ronald, who inherits his uncle's valuable glass dome collection only to discover it contains only sand, and learns from a doctor that the dome itself has mysteriously disintegrated into powder, prompting Ronald to travel to Africa with a journalist named Louise to uncover the mystery surrounding the dome's origin in Nairobi.