Comes a Ferryman. The Ferryman Pentalogy, #1

The ferryman turned to face her and she quickly looked away-as if an owl had suddenly focused on her in the dark. Now that they'd reached the trunk of the river, he had relaxed the intensity of his rowing to a more casual pace, and was allowing the current to do most the work. (She didn't dare risk activating the ring now!) Instead she looked at the floorboards, and after a few moments, remembered the book lying next to her.
She reached toward it habitually-but froze when the raven cawed loudly and its red beam fell upon the back of her hand. A tense moment followed in which she looked from the ferryman to the raven then back again as her fingertips wavered over the golden cover. Then the ferryman motioned with his head, and the raven's light swung away and switched off. She picked up the book slowly and placed it on her lap.