Darren G. Davis 
Wrath of the Titans #4 [EPUB ebook] 

In this final chapter of the epic adventure, Perseus comes face to face with his greatest challenge ever… and the life of his infant son, and every other life in the kingdom of Argos, is at stake! Have the gods abandoned Perseus in his hour of need? For the first time without divine aid, Perseus must make his stand, prove his mettle, and confront the surprising twists that await. Although his heroic stature in the annals of legend is secure, his destiny and his legacy may be in doubt.