The Complete Echo Power Trilogy - Echo Power Trilogy, #4

The sky splits open. Terror rains down on the earth. Can anything survive the Echo? A mad man has unleashed unthinkable magics, creating a hellscape on earth and a new parallel world known as the Echo. Carnage is everywhere. Monsters rampage. Who will take on the insurmountable task of saving the world? A librarian. A disgraced British earl. An ex-sheriff's deputy. A former Marine. A computer geek.
And one mysterious amnesiac who might hold the key to it all. Take a wild, steamy, death-defying ride into the unknown with these six reluctant heroes. The Complete Echo Power Trilogy will leave you breathless.