I really liked the ending. The last part of the book was the best. 
 Actually, the whole tail end of the book was great. I liked the fact that we got to know more about Strike's life and his brothers that we don't get to see in the first book, as well as what was the last straw with him and his ex. As readers we also got to see his full personality, and I admit at times I didn't like him as a character, but I do have a slight hero worship of him so it's okay. 
 Also, Robin is the best I love her as a character, but I also don't like her relationship with Matthew. It got better, but I still side-eye him because he's kind of a jerk. 
 The overall plot was great. I love the missing person plot line and how it became more than that. It was pieces of a plot that became more than just what was given to us. I also got paranoid and doubted everything I was told which sounds sarcastic but was really refreshing. I seriously can not wait until the next book comes out in a few days!