Publisher: The Borough Press
Release date: 12 February 2026
Back cover blurb: Cambridge, 1942. Twins Tessa and Theo had always shared everything – until the summer Tessa spent studying in France. She hasn’t been the same since. But before Theo can find out why, he is recruited by the RAF and disappears into the skies. Determined to carve her own path, Tessa joins the clandestine Special Operations Executive, slipping into the shadows of occupied France. It will be dangerous work, but France is the home of her greatest love – and her darkest secret. Tessa has many reasons for wanting to return. Two years later, only one of them comes home.
Twins, Tessa and Theo have been inseparable since they can remember, until the summer that Tessa spent studying at the Sorbonne in Paris. They were both supposed to study at Cambridge, until Tessa changed her mind at the last minute.
The space between only widens with the arrival of WW2.
Theo signs up to the RAF, despite his Father's pacifist beliefs and Tessa is working for the government in a different way, though not the way she wants to be.
As a typist in a typing pool she doesn't think she is being used to her full potential. Luckily the powers that be agree, and Tessa is signed up as an SOE operative. She knows that the work is dangerous, but is determined to do her bit for the war effort.
As soon as she lands in occupied France she realises that she may have bitten off more than she can chew.
Theo meanwhile is flying above Europe in Battles testing his strength and ability. After suffering an injury that forces him home to his parents they discover together the news that Tessa is missing, presumed dead, but they don't understand how or why this was allowed to happen.
Theo, now resigned to a desk job is determined to find out what has happened to his Sister, especially as no one seems to want to talk about her disappearance. He knows that something is not right, but isn't prepared for the harsh reality.
Could his Sister really be responsible for the things that they are saying? Theo doesn't believe so, but he knows that Tessa changed when she came back from the Sorbonne, and things were never quite the same.
Did he ever really know his sister at all?
This is an absolutely beautifully written novel, and is definitely one of my favourites of 2026 so far.
The Shock of the Light is available now via Amazon online and all good book shops.
Thank You to the publishers who approved my request via Netgalley in exchange for an honest review.