Sister by Rosamund Upton

This book was recommended to me by a friend whose opinion I usually agree with.  I wanted to like this book, and while I didn't hate it it fell short on a few key levels for me.  

Despite the premise being that a woman in NY is called back to London urgently to help find her missing sister, I felt the story took a while to get going.  

The story is mostly told as a series of interviews between Beatrice and Mr Wright who works for the police department.  

Tess was pregnant and expecting soon.  She was unmarried and the father didn't want to be involved with the baby.  Tess and Beatrice had a brother Leo who died of cystic fibrosis at a young age and they know they are both carriers.  Tess signs up for a in utero trial cure for CF.  

Not long after Beatrice arrives in London Tess' body is found and ruled a suicide.  Beatrice refuses to believe that Tess committed suicide, and continues to investigate Tess' death at her own peril. This was the part of the book I found interesting, but at first I didn't buy the ending.  I skimmed the book again the next day to see if there was some detail I missed and with fresh eyes it did seem more plausible, but still not satisfying.  

Next up Paris by Edward Rutherford.  I've read a few of his books and have thoroughly enjoyed some (Russka and London) and couldn't get through New York or The Princes of Ireland.  I'm hopeful about this one.