Episode Number: 3
Season Episode Number: 3
Production Number: Unknown
Writer: Dennis Marks
Director: Hal Sutherland
Voices: Ted Knight (Narrator), Bud Collyer (Superman), Gilbert Mack (Hawkman), Ray Owens (Flash), Pat Harrington Jr. (Atom), Gerald Mohr (Green Lantern), (Mastermind).
Plot: An evil alien named Mastermind has lured the Justice League away from his plot to take over the world and every attempt to stop him ends up in failure. The future of the planet is in grave peril unless the Justice League can stop the criminal alien.
Review (Warning! Spoilers!): Bad Day on Black Mountain is the third of three seven-minute shorts starring the Justice League of America produced for the Superman/Aquaman Hour of Adventure in 1967.
Each episode, including this one, featured the same plot: Alien invaders are trying to take over or destroy the planet and their plots are so complex that it takes the combined forces of each member of the Justice League's unique powers to bring the aliens down.
Such is the case with Mastermind, who decides to lure the Justice League together and then reveal his master plan, including the exact whereabouts of everything dangerous in the world!
Not a very bright move for a villain named Mastermind because the League simply went out and stopped the chaos. He should have lured them all into a room with super strong yellow walls and no holes or cracks laced with kryptonite. That would have held them.
The show never explains how Mastermind found out their secret identities. You'd think that the Justice League would want to find out about a major security breach like that.
Once again we see Superman using his super strength, this time to move a giant asteroid that is going to destroy the planet. This is not as impressive as the last episode when Superman moved the ENTIRE PLANET back into its orbit!
Missing from this series is Aquaman, although he does appear by name in the Justice League theme song. Based on these stories, it's a good thing Aquaman stayed at home. He's pretty useless when he's not in water and he's especially useless in outer space. Battling space invaders would not his thing.