Two doctors are on thin ice as they race to save the world from a deadly disease.

Epidemic researcher Dr. Avery Thatcher has studied countless illnesses...but nothing prepares her for what she finds at a remote Antarctic base: the man she never wanted to see again and a mysterious ailment ravaging inhabitants. Avery will do whatever it takes to discover the illness's cause, and she vows to keep her heartbreaking history with Dr. Grant Jones in the past–even if reignited passion brings them dangerously close.

For Grant, ending this outbreak and regaining Avery's trust are vital. As their hunt to contain a lethal pathogen escalates, he'll put everything on the line to avert disaster. But will another insidious threat stop them both cold?