Astrid Nielsen, works in the library of the judicial olice. Suffering from As erger'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 com lex investigations which have remained unsolved to date. In addition, also to reci rocate, he will try to hel Astrid on the behavioral side, in order to rovide mutual hel .