Rysa Walker

Chronos Files

1 - Timebound (Jan-2014)
2 - Time's Edge (Oct-2014)
3 - Time's Divide (Oct-2015)

Chronos Origins

1 - Now, Then, and Everywhen (Apr-2020)
2 - Red, White, and the Blues (Jan-2021)

Delphi Trilogy

1 - The Delphi Effect (Oct-2016)
2 - The Delphi Resistance (Oct-2017)
3 - The Delphi Revolution (Oct-2018)

---

• 

  Timebound
  

  • Jan-2014
  • / Science Fiction
  • 

  Chronos Files - 1
  

  When Kate Pierce-Keller’s grandmother gives her a strange blue medallion and speaks of time travel, sixteen-year-old Kate assumes the old woman is delusional. But it all becomes horrifyingly real when a murder in the past destroys the foundation of...

---

• 

  Time's Edge
  

  • Oct-2014
  • / Science Fiction
  • 

  Chronos Files - 2
  

  To stop her sadistic grandfather, Saul, and his band of time travelers from rewriting history, Kate must race to retrieve the CHRONOS keys before they fall into the Cyrists’ hands. If she jumps back in time and pulls the wrong key -- one that might...

---

• 

  Time's Divide
  

  • Oct-2015
  • / Science Fiction
  • 

  Chronos Files - 3
  

  The Cyrists are swiftly moving into position to begin the Culling, and Kate’s options are dwindling. With each jump to the past or the future, Kate may trigger a new timeline shift. Worse, the loyalties of those around her -- including the allegian...

---

• 

  The Delphi Effect
  

  • Oct-2016
  • / Science Fiction
  • 

  Delphi Trilogy - 1
  

  It’s never wise to talk to strangers…and that goes double when they’re dead. Unfortunately, seventeen-year-old Anna Morgan has no choice. Resting on a park bench, touching the turnstile at the Metro station -- she never knows where she’ll enc...

---

• 

  Time Trial: The Graphic Novel
  

  • Nov-2016
  • / General Fiction
  • 

  Collecting comic book issues #1-4, this GRAPHIC NOVEL tells a brand-new story in Rysa Walker’s CHRONOS FILES universe! Bestselling author Rysa Walker (Timebound) takes readers on a time-hopping adventure in this stand-alone series set in her CHR...

---

• 

  The Delphi Resistance
  

  • Oct-2017
  • / General Fiction
  • 

  Delphi Trilogy - 2
  

  What if your mind became your worst enemy? Struggling with evolving psychic abilities, seventeen-year-old Anna Morgan and her equally exceptional friends are on the run from the ruthless Graham Cregg, leader of a covert operation known as the Delp...

---

• 

  The Delphi Revolution
  

  • Oct-2018
  • / Action Adventure
  • 

  Delphi Trilogy - 3
  

  A psychotic killer hijacked her mind and her body. She’s taking them back. Eighteen-year-old Anna Morgan is on the run from the very government project that created her abilities. Now they seek to weaponize the gift she doesn’t want and can’...

---

• 

  Now, Then, and Everywhen
  

  • Apr-2020
  • / Science Fiction
  • 

  Chronos Origins - 1
  

  From the bestselling author of the Chronos series comes a page-turning novel of time travel, fast-paced action, and history-changing events.

  When two time-traveling historians cross paths during one of the most tumultuous decades of the twen...

---

• 

  Red, White, and the Blues
  

  • Jan-2021
  • / Science Fiction
  • 

  Chronos Origins - 2
  

  The United States’ past is hijacked in a time-warping adventure of future interdimensional, high-risk games by the bestselling author of the CHRONOS series.History is turned inside out when off-world travelers challenge Tyson Reyes and Madi Gra...

---

• 
  

  
  

---

• 

  Bell, Book, and Key
  

  • Nov-2021
  • / Science Fiction
  • 

  With a madman in control of the timeline, one wrong move could be the last for time travelers intent on stopping him in this mind-bending novel by the bestselling author of the CHRONOS series.CHRONOS historians Madi, Tyson, and Katherine and their co...

---

• 

  The Cold Light of Stars
  

  • May-2023
  • / Thriller
  • 

  A chamber from an ancient civilization is uncovered deep below the surface of Mars. Science reporter Claire Echols is assigned to cover the story, but someone is determined to stop her. Is it the wealthy entrepreneur leading the ongoing terraforming ...

---

Award-Winning Books by Rysa Walker

Timebound
2013 Breakthrough Novel Award -- Young Adult