The Serial Thriller, a Vekoma Suspended Looping Coaster that used to be located at the now defunct Six Flags AstroWorld, was shipped to La Ronde from the Great Escape, another Six Flags property where it lay in storage since 2005. The roller coaster, which opened in 1999 at Six Flags AstroWorld, has been installed over the Lac des Dauphins at the park for the 2010 season and is named Ednör - L'Attaque. It features special effects and theming from an alleged sea monster that was reported to have appeared in the Lac des Dauphins.