A tsunami strikes a small island in the Pacific Ocean, leaving destruction and utter madness in its wake. Is it the next pandemic?

After the natural disaster, CDC epidemiologist Dr. Madeline Hamilton and her fiancé, FBI operative Quinn Traynor, go to Nalowale Island to investigate a deadly outbreak of unknown origin. Victims become aggressive and irrational, suffering from insomnia, hallucinations, and eventual death.

But not everyone cooperates with the agents' efforts to save lives. Devon Wheeler's fortune depends on completing construction of the Azure Cove Resort. He's hiding something, and he'll do whatever it takes to open the luxury complex on time, even if it means concealing critical information related to the outbreak.

Under quarantine conditions, with all communications to and from the island shut down, the wave of illness climbs toward a calamitous crash. Then Madeline uncovers something terrifying...and impossible. The investigation requires huge leaps of faith and significant acts of courage, but what they discover, and what they take home with them, will change lives forever.

"Once again, Jenifer Ruff delivers a heart-pumping thriller! The well-crafted twists surrounding this medical mystery will keep you guessing until the end." - Audrey J. Cole - USA Today Best-Selling Author

"A gripping thriller...I loved every minute of it."-Timothy Browne, USA Today bestselling author

This is the third adventure in the FBI & CDC Thriller Series. Mystery and medical thriller fans of James Patterson, Michael Crichton, and A.G. Riddle will love Only One Wave: The Tsunami Effect. It can be read as a standalone novel with no confusion.