As a child, Alicia was in love with a classmate - handsome Robert O'Brien - however, without any hope of reciprocity. Now she is twenty-five and has the most boring profession in the world - a librarian. And Alicia wants exciting adventures, maybe even fraught with danger, because her favorite pastime is reading exciting detective stories. And then one day she had the opportunity to take part in the investigation of a crime herself, and not alone, but together with that same Robert O'Brien...