Dark Seraphine is a wonderful story, written in Caleb's POV. And Caleb has quite a sense of humour.
Caleb has been able to see The Walker's for the longest time and he has kept it secret for a while now. As the story unfolds, we see Caleb discover who he is, and the reason why he can see the Walkers and the Dark Agents--oh these ones sent shivers scattering all over my body. The twist at the end of the story was a pleasant suprise, and I look forward to reading the next book in the Trilogy. I love a good cliffhanger and this one was a good one.