Hidden throughout the world are invisible doors. If left unlocked, you could step through and enter a mysterious hallway that exists outside of space and time itself. If you found one,

Would you step through the door? 

This is the choice Jesse Takanashi has to make when his sister disappears, and his search for her leads to an invisible door in the woods behind his boarding school. 

Kira Avalon steps through the door with her childhood best friend, Jesse, who she may love as more than a friend. Together they are swept into a medieval world where magic serves as technology and dragons are no surprise. But when a sexy mysterious stranger joins their quest, his interest in Kira makes her question what she really wants.  

Natalie McKenna can’t believe she watched two of her best friends go through a mysterious portal while she was too scared to go herself. Determined to redeem herself, she searches for clues about who is causing the disappearances.

Shawn McKenna helps his twin sister Natalie investigate. Because Jesse’s sister was not the first student to disappear from their school. Shawn worries it may be more complicated than they even realize. 

Tess Summers helps the twins uncover the secrets of their school, and search for a way to bring their friends home. Because she suspects it may all be connected to that mysterious hallway… 

Following a group of friends torn apart by a perilous mystery that spans decades and traverses through multiple worlds, step through the portal into the first book of this genre-bending young adult fantasy series.