Dario Chimisso made his first appearance on 18 November 1986. He is portrayed by Marino Mase.
Dario is an Italian an lawyer with a romantic interest for Jan Hammond. Dario takes her away on a business trip to Venice (Italy), so she can get over her recent split from Den Watts. Here she accidentally bumps into Den, who is there on a second honeymoon with his wife Angie. Den is jealous of Jan's friendship with Dario, even though she claims it is platonic on her part. However, in August 1987, Jan sends Den a letter informing him that she and Dario had got married on a gondola in Venice. This news upsets Den, although it amuses his ex-wife, Angie.