Jussi Adler-Olsen - A 64-es betegnapló - pocket book

Abuse and violence were commonplace on the secluded Danish island, which was a forced residence for women deemed mentally disabled, but also for prostitutes. When Rita Nielsen first set foot on the island, she became part of a drama that 55 years later led to the most complicated case of the Q Unit, which deals with unsolved cases.
The files of a prostitute who disappeared without a trace are now under intense scrutiny, so Carl, Rose and Assad soon discover that the woman's former disappearance is part of a serious illegal case that has apparently continued ever since. And when they start digging deeper, an extremely cold-blooded opponent appears on the scene...