A razor-wielding serial killer is on the loose, murdering those around Peter Neal, an American mystery author in Italy to promote his newest novel.
Ester finds herself sexually attracted to her newly divorced friend Adele. When Ester admits another love to her hot-headed husband, he searches manically for the rival, who he never suspects is a woman.
To win a duel, a merchant makes a dangerous pact with an inscrutable spellcaster.