The Girl Behind the Wall By Mandy Robotham

A city divided.

When the Berlin Wall goes up, Karin is on the wrong side of the city. Overnight, she’s trapped under Soviet rule in unforgiving East Berlin and separated from her twin sister, Jutta.

Two sisters torn apart.

Karin and Jutta lead parallel lives for years, cut off by the Wall. But Karin finds one reason to keep going: Otto, the man who gives her hope, even amidst the brutal East German regime.

One impossible choice…

When Jutta finds a hidden way through the wall, the twins are reunited. But the Stasi have eyes everywhere, and soon Karin is faced with a terrible decision: to flee to the West and be with her sister, or sacrifice it all to follow her heart?