Irene, nicknamed 'Miele', has devote herself to people looking for help, and tries to alleviate their suffering even when they make extreme decisions. One day she has to cope with Grimaldi and his invisible malaise.
A psychiatrist is murdered and a rich heiress fears her disturbed lover will be implicated as the killer. She hires an ex-lover lawyer friend to help her defend him but when he turns up dead, the lawyer realizes he´s in over his head.
Don Matteo is a thoroughly ordinary Catholic priest with an extraordinary ability to read people and solve crimes. He’s a parish priest who never met an unjustly accused person he didn’t want to help.