Shadows of Montmartre
About 40 years ago, the "known lands" in the Rose Circle lost contact with Corwin's realm of Montmartre. Some great event had changed the fabric of reality, and things would never be the same. The Rose Circle and its inhabitants lost all contact with the rest of the Amberverse and its inhabitants.
At that time, both Trump and Corwin's Pattern became erratic within the surviving realms. It is assumed that some damage to Corwin's Pattern is the cause of this, and there has been much speculation about who might have been responsible. The most popular candidates are Merlin The Traitor, Rinaldo, Dalt, and some unknown offspring of Brand (in that order).
Four of Corwin's children were rulers of close in shadows in the Rose Circle, and were caught in the "known lands" when Le Schisme happened. The shadow paths between these realms were not disturbed by Le Schisme. The shadow paths into Montmartre remained, but became more erratic and less reliable the closer one gets to the [[Isle de Paris]]. Those of the blood can travel the rail lines there, but most others have problems. The rail station at The End of the Line is used exclusively by the royal descendants and their staff, and ends just a few miles short of the [[Isle de Paris]]. The Isle itself is continually covered by fog. Jean-Paul has attempted to approach the Isle but found it warded against his approach. In Montmartre, the Isle was the location of Corwin's palace and the Pattern was found underneath it. All of the Player Characters were born after The Schisme.