I love Sandie Jones as a writer! She also writes crazy twists and books that are plain devious fun to read. The half sister definitely starts off with a little darker undercurrent than her previous books and quickly dives into the first meeting with the supposed half sister. The groundwork is played perfectly as the first few chapters set up the dynamics between all of the characters while also introducing the mystery that is Jess. I read this so quickly and I wish I could have kept reading. I am definitely hooked already!