The who-done-it aspect of this story is almost inconsequential; as it's pretty much a foregone conclusion from the moment we are introduced to the character of Bauchelain. The fun is in how Steven Erikson unfolds the story and fills out the characters of Bauchelain and Reece, who had minor roles in Memories Of Ice. Never has the face of evil presented such a reasonable mien as that of Bauchelain.
His concern for the well being of others, especially that of his new manservant, makes him seem far and beyond the most considerate person of any of the characters in the story. But in spite of this, there is always something about him that suggests the evil lurking below his veneer of cultured politeness.
The Reece we meet in Blood Follows is not the wreck of a man we saw in Memories Of Ice. True he's not the smartest of folk, but that doesn't mean he's lacking in self-respect or native cunning. But there's only so many horrors that a man can take, and a peak at Korbal Broach's attempt at begetting with the organs he's gathered would ruin a person with twice the strength of Reece.
While this little side trip into another territory in the world where the Malazan Empire is known makes only passing reference to events outside the island city of Lamentable Moll, there is no other world it could possibly be. Steven Erikson's talent for establishing its distinguishing characteristics; the pantheon of God's and Goddesses, the manner of speech, accepted practices, character types, and the atmosphere in general is such that those familiar with The Malazan Book Of The Fallen will have no trouble recognizing the place.
Hearing familiar phrases spoken, and references made that are recognizable because of our knowledge of the world the story takes place in, is one of the things that makes this book so enjoyable. Like watching a movie that was shot in your hometown and seeing friendly landmarks in a different context, Blood Follows has a wonderful sense of the familiar while being a brand new experience.