The 39 Clues Wiki
The 39 Clues Wiki

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Cobra Venom is a Janus Clue and is part of Gideon Cahill's master serum.



The King Cobra Venom Symbol

The Clue was hidden in the Diwan-i-Khas located in the Red Fort in Delhi. Ustad Ahmad Lahauri, the designer of the fort, hid the Clue there. Lahauri also designed the Taj Mahal. As a reward, the Janus leadership gave him a hint leading to one of the Clues. It was often thought that it was hidden in the Taj Mahal, but instead, it was hidden in the Diwan-i-Khas.

Card Combo[]

This clue can be unlocked in Mission 2: The Emperor's Secret or by completing the following card combo:

Card8 Card12 Card17 Card21


The scene first shows the Red Fort. We zoom in on it and then zoom through a row of arches in that building, at the end, a king cobra with its tongue out appears over a green background with the Janus crest on the bottom left of the screen. The words "KING COBRA VENOM" that come on the screen at the end.