S1, E6: Who did Adele entrust her gun to for Nina? After Nina hands it over to the police, she starts getting threatening messages. Carlo finds out that Nina and Annabella were watching him and Margherita trying to steal a valuable diamond from the Bosio home. Despite Nina's claims of innocence, Carlo is doubtful and, with Tommy's help, reports both her and Annabella to the authorities. Meanwhile, Margherita's grandmother, Mrs. Ortensia, passes away and visits Nina in a dream, urging her to find a specific Japanese green tea that Adele loved. Commissioner Barbera uncovers evidence suggesting Tommy may have tried to run Nina over and discovers that the gun retrieved from the lake belongs to him. As a result, Tommy becomes the prime suspect, leading to his arrest for the attempted hit-and-run and the mercury found in the tea he gave to Adele.