The devil's banshee The devil's series, book 3.

Ever since The Devil's wife left him to "go find herself," the overlord of Hell has had a hard time replacing her. As his dreamcatcher, she protected all realms of the afterlife by filtering his most insidious imaginings. Now, The Devil thinks he's found a viable substitute in Elinor Powell, the kindest of the four teen friends known as Team DEVIL. Team DEVIL will do anything to protect Elinor-especially Alfarin, the bighearted Viking prince who...