Let me give you the low-down: 
 This book begins in Lawrence, Kansas. The night is peaceful, until the protagonist's mother enters her baby son's nursery, and sees a dark figure standing over the crib. Her husband rushes to her aid when she screams, but he is too late. His wife is on the ceiling, burning in a ball of flame. He grabs the baby, gives him to the young protagonist, and says, "Run!" 
 The young protagonist rushes from the house, their baby sibling in their arms. They look back at the burning house, and despite their young age, they know that their life will never be the same. They are hunters, now. 
 Years later, the protagonist and their father dedicate their lives to hunting the supernatural, determined to rid the world of evil. They live a solitary life, fighting ancient monsters and, when the father is killed by a supernatural entity, the protagonist must seek to avenge his death. 
 ... 
 Okay, I kid. That's not this book. That's Supernatural. At least the first paragraph is. The second? Interchangeable. 
 I don't blame Lilith Saintcrow for taking a leaf out of SPN's book. It's enormously popular, and let's face it, a good quality show (if a little problematic. Okay, a lot problematic. But I love it nonetheless). Use the formula, and you're guaranteed a fanbase. 
 Strange Angels was a decent read. It won't challenge you and it certainly won't change your life, but it's a good Sunday afternoon pastime. I assume. I didn't read it on a Sunday afternoon. I read it in high school, under the desk in my Civics class. Ha! 
 There's not a whole lot I can elaborate on. It was fine? I kinda recommend it if you want a fast-paced read that'll keep you entertained. Just stay away from the sequels. They're awful.