2.5 stars, rounded up 
 I don't know what to make of "Since We Fell." The ending feels like a different book than the beginning--different in tone, in genre, and with a conclusion that feels only marginally connected to the plot's departure point. Initially, this is a realistic narrative about a neurotic mom, an absent father, and a woman's attempts to reckon with those forces. About midway through, it becomes a love story, then an eerie psychological mystery, and then--surprise!--a violent crime thriller that is a little too unbelievable. Threads that are laid in the beginning (Rachel's search for her father, her struggles with PTSD and agoraphobia, and how this somehow leads her to shoot her husband) are brought to unsatisfactory--almost lazy--conclusions before the narrative swiftly moves on to an action-packed conspiracy involving some convenient, and unconvincing, "deus ex machina" moments. The touching and viable first half of the novel does not lay the groundwork for the kind of suspension of disbelief required in the second half. 
 Though this book delivers a fun reading experience (it's a good beach read, or a page-turner for a rainy day), it's all over the place, and the connection between plot points is dubious at best. It is gripping and immersive, but it left me scratching my head and wondering "what did I just read?"