Heart of Stone (Gods & Monsters #4) By: Kelly Keaton

(N) God-killer Ari and mistborn Sebastian are on the hunt for Archer, infant son of Athena, a child fated to bring about the Blood Wars, the ultimate showdown between the gods and the monsters they created, a war that will trap mankind in the middle of a destructive conflict thousands of years in the making.
     As Ari and Sebastian attempt to rescue the child, forces pull them apart, sending Sebastian on a perilous journey to the desert sands of Egypt and into the lair of a dark, enthralling entity, and Ari to the Halls of Olympus and, darker still, the very heart of the Underworld where Death awaits with a bargain that brings Ari's worst nightmares into sharp and heart wrenching focus.

      I've finally got around to finishing this series and I'm disappointed to say that Heart of Stone wasn't nearly as interesting as the other books in the Gods and Monsters series. While I did manage to finish Heart of Stone in no time at all it wasn't nearly as satisfying as the other books in this series.