39 Clues Wiki

Erasmus Yilmaz

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Age:Unknown (deceased)
Relationships:Bartu Yilmaz
First Appears In:Vespers Rising
Last Appears In:Shatterproof

Erasmus Yilmaz is an Ekaterina and Madrigal, and at first Dan thought he was a very angry biker and was going to terrorize Fiske Cahill in front of a coffee shop. Amy and Dan attacked him with a windshield wiper. He was nicknamed by Dan as "Big Scary Harley Dude." It is also known that he "has a Vesper database in his head".



He usually wears leather leggings, a leather jacket, leather boots like a biker and his hair is a mass of black curls and he has gray eyes. He appears to be good friends with Fiske Cahill and William McIntyre.


Vespers Rising

He, Nellie, and Fiske told Amy and Dan about the Vespers. Fiske said that he has a Vesper database in his head. He also comes to help Amy and Dan when they are being chased by the Vespers.

A King's Ransom

He meets Amy and Dan to discuss that their father was a Vesper. In the end of the book when William McIntyre dies he later cries over William McIntyre's dead body.

Cahills vs. Vespers Mission 2: A King's Ransom

He was a suspect for Vesper Five but proven not to be when he sunk Vesper Five's ship in the Bermuda Triangle. It is also found out that he was an Ekaterina.

The Dead Of Night

He goes to Pompeii with Jonah and Hamilton.


Erasmus breaks into a Vesper-safe house and battles Luna Amato. He drops his weapon and turns toward Milos Vanek. In that split second Luna grabs his weapon and impales Erasmus through the heart. Jonah and Hamilton rush in and Jonah shoots Luna, killing her. The dying Erasmus gives Jonah and Hamilton a flash drive and gives an unfinished warning about the Vespers before he dies.


Among other things, skiing and motorcycling.


  • He once rode his motorcycle from Paris to China.
  • He was born into a family of Ekaterinas but was recruited by the Madrigals as a teenager.
  • He went into hiding for five years after Hope Cahill and Arthur Trent were killed.

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