USA Today bestselling author Melissa F. Miller returns with a gripping new thriller. Married covert operatives Sasha McCandless-Connelly and Leo Connelly are on their first joint mission for the Lighthouse, a private intelligence agency. Their assignment: uncover the truth about Caleb Rye, a rising literary star whose debut thriller described a terrorist attack before it happened. By day, Rye teaches English at Foggy Bottom Preparatory School, a haven for the children of diplomats and spies. By night, he writes. When his next manuscript predicts another attack, Sasha and Leo's mission becomes urgent. Digging into Rye's past and his uncanny fiction, they uncover a forty-year-old black operation gone horribly wrong-and a betrayal that implicates their new employer. Signal Fire marks the return of two of Miller's most beloved characters in a high-stakes thriller that explores the cost of moral compromise.