To earn this Clue, you must complete Mission 6: The Mad Scientist's Clue or gain all the cards for it.

History Edit

The true reason of the fight between two legendary inventors was because they were both Ekats looking for one of their branches lost clues, and their competitive nature got the best of them. One of them had a breakthrough, so he hid the clue in his secret lab in Croatia.


The cutscene shows Nikola Tesla's Croatian home. Two bulbs on the left and right side start to build up electricity until blue light flies outwards from them. The light is shortly directed to a test tube at the top. It glows, until the lab, bulbs, and tube exit the screen and the name of the clue and its branch fade in.

Card ComboEdit

Both this combo and Mission 6: The Mad Scientist's Clue unlock Mercury.

People with this ClueEdit

Dan and Amy Cahill

About MercuryEdit

Mercury was usually used in thermometers, but now it isn't used because it is highly poisonous if swallowed. This element is one of the two elements that are liquid at room temperature, along with Bromine.


It can badly damage one persons health and when it can cause tremors throughout the body.

Types of MercuryEdit

There are three types mainly but it is unknown which type is used in the Master Serum:

Elemental Mercury or Metallic Mercury

Organic Mercury

Inorganic Mercury