The Salem witch trials. The Spanish influenza of 1918. The treason of Benedict Arnold. These events are notorious in American history, but new revelations suggest we don’t know their full stories. Smithsonian Channel’s new series AMERICA’S HIDDEN STORIES delves into hidden records to investigate what our history books may have missed: Is a British lord responsible for the Japanese attack on Pearl Harbor? Did Benedict Arnold act alone? Where is the true site of the Salem witch hangings?