嗄strid Nielsen, works in the library of the judicial police. Suffering from 嗄sperger's syndrome, however, she has an incredible memory, so she is very useful in analyzing the files for ongoing investigations. The district commander, having noticed this ability, decides to use it to the fullest, entrusting her with very complex investigations which have remained unsolved to date. In addition, also to reciprocate, he will try to help 嗄strid on the behavioral side, in order to provide mutual help.