This is a fascinating book, giving the reader insight into something they probably never thought too much about previously.  It's about the people and process of fixing underwater sea cables. The underlining themes are connection and disconnection in modern times.    
There is a lot of technical detail, especially about free diving and it really makes you feel like you are on the ship that carries out the repairs.  

It's an interesting technique for the narration, which probably has a name.  The narrator is a writer and he is commissioned to write an article on how repairs happen to these cables.  So the story unfolds as he does his research on it.  He brings you through what he is thinking about the characters as their action unfolds.  And when you get to read the acknowledgements at the end, its hard to decipher if this is Colum McCann or the narrator writing.  

There is a bit of a twist in the story, but I was not sure whether that is enough to generate the title.  But I am looking forward to see the author as part of the book tour, so hopefully will learn more. 

Overall, a combination of the uniqueness of the story and the style of narrator hooked me in from the first page .  

Available on 6th March.  I was GIFTED a free e-ARC from @bloomsburypublishing via @netgalley