'Nashville' and 'Heroes' star Hayden Panettiere dead at 36

Actor Hayden Panettiere has died at 36. Nathan Congleton/NBC via Getty Images "Nashville" and "Heroes" actor Hayden Panettiere has died at 36. Panettiere was found in cardiac arrest prior to her death, the Greenville County Coroner's Office told Business Insider. In May, the actor released a memoir detailing her struggles with postpartum depression and alcoholism. Actor Hayden Panettiere has died at 36, her representative told Business Insider on Monday. "It is with profound sadness that we…