Liars' Paradox

"They live in the shadows, Jack and Jill, feuding twins who can never stop running ... Their prowess is outdone only by Clare, who has always been mentor first and mother second. She trained them in the art of espionage, tested their skills in weaponry, surveillance, and sabotage, and sharpened their minds with nerve-wracking psychological games ... Now twenty-six years old, the twins are trying to lead normal lives. But when Clare's off-the-grid safehouse explodes and she goes missing, they're forced to believe the unthinkable: their mother's paranoid delusions have been real all along"--