|This article is about a/an episode in Himitsu Sentai Gorenger.|
Horrible Black Crusaders! Attack According to the (Secret) Plan (戦慄の黒十字軍!（秘）作戦で攻撃せよ Senritsu no Kuro Jūjigun! (Hiso) Sakusen de Kōgeki Seyo) is the eighteenth episode of Himitsu Sentai Goranger.
A plot by a Masked Monster to turn children into Black Cross soldiers becomes unknowingly infitrated when Ooiwa and Peggy join their ranks.
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- This episode aired on NET the same day episode 20 of Kamen Rider Stronger, The Great Scary Desert! Two Tōbeis?!, aired on TBS.
- The preview for the next episode changes in this episode; switching from the BG of Susume! Gorenger to Nazonazo no Midorenger while using riddles for what will happen next time.
Himitsu Sentai Gorenger Volume 3 features episodes 13-18: Ep. 13: The Pink Secret! Defeat the Human Bomb, Ep. 14: The Red Coffin! The Mysterious Skull Mansion, Ep. 15: The Big Blue Fortress! Big Raging Variblune, Ep. 16: White Weirdness! The Eye in the Mirror, Ep. 17: The Purple Theme Park! A Demonic Cemetery, and Ep. 18: Horrible Black Crusaders! Attack According to the (Secret) Plan. 
Blu-ray Box 2 comes with 17 episodes.