Annetta Sweetko at Fresh Fiction says:
"HEART OF THE SERPENT is the amazing, thrilling addition to the Hades Carnival series!...All the past characters are back and they now realize that though the worst might be over, they must still be prepared for whatever hell sends their way. Can't wait for the next installation of Hades Carnival! HEART OF THE SERPENT is on my TRA shelf as are all Ms. Walters' books with room for more."
Angel at Angel's Addiction Book Blog says:
"AWESOME. FREAKING. BOOK. My heart hurt for Mordecai, he was just so lonely and just didn't feel like he deserved any happiness for himself. Heart wrenching, sweet, action packed and schmexy as all get out. I just can't even recommend this book enough! Seriously people... Please, please, please, check out this series if you haven't already."