Clara Seymour is trying to find her feet in London, living away from home for the first time. Brought up by her domineering mother, treasuring time any time with her adoring father, Clara's world is brought to a standstill when her dad abruptly dies.

Then, a mystery comes to light in a letter from him.

As I am sure you are aware that before I met your mother I had a previous marriage. But what I am not sure we have ever discussed is that we had a daughter.

So begins a journey of discovery that takes Clara to remote Norway and a landscape as brutal as it is beautiful, a voyage as fraught with personal and emotional danger as the sheer cliffs and torrid seas she must cross to find out who her father really was - and find the sister she's never met.