I’m embarrassed to admit I didn’t get the title reference until I was writing this review. It should be obvious, I mean the book opens with our delightful narrator Allegra explaining that her superpower is splitting in two… offering one half of herself to each of her beloved grandmothers, before mentioning her father’s presence, but in my defence I read the book when my brain was weary, so….

Having said that, I did initially take it into the bathtub for a ‘short’ read before organising my dinner and so forth, but was still there until I closed the last page nearly three hours later.