Heart of S.T.O.N.E.
by Tess O'Connor
Death, duty, and deception. Love, loss, and loyalty.
STONE, a ruthlessly effective secret organization known only to its members, forces an unlikely partnering of a young widow of a STONE assassination and the only living ex-member of STONE - who may have been that assassin. What they uncover will lead them to doubting and suspecting everyone - even each other.