The life and legacy of atomic bomb creator J. Robert Oppenheimer serves as the subject of this installment of PBS's American Experience. His name forever bound to the Manhattan Project, America's most famous top-secret initiative, Oppenheimer presided over the assembly of the atomic bomb that helped end World War II. The legacy of the charismatic scientist would soon be tainted, however, by accusations of treason. Why did the country who once hailed Oppenheimer as a national hero suddenly turn their backs on him? Academy Award-nominated actor David Strathairn stars as Oppenheimer in a documentary profile of the man who would ultimately emerge as one of the 20th Century's most important, yet controversial figures.