A collection originally published in 1960 through 1968.

The worst fears of the Justice League are realized, as the villains strike through those closest to the heroes! Plus, an important member of the JLA returns!

Sixteen-year-old "Jacqueline 'Jacky' Johnson inherits a jetpack with a mysterious power source. Along with her brother Chuck and their cat, she must protect her home from a threat that may just be from outer space"--Back cover.

“THE MYSTERY OF THE MENACING MASK!” The trail of a jewel thief leads to a subterranean enclave of criminals.

The Riddler leads Batman into a mystery within a mystery through his compulsion to speak the truth through riddles. Does he hold the key to the reason the villains are helping mankind? Plus, Aquaman falls victim to one of the DCU's most nefarious criminals!

The Monarch of Menace’s son dons his dad’s costume and goes up against Robin. Batman battles the real Monarch.

A collection originally published in 1960 through 1968.