Hitler's medical records have recently been found in the US: X-Rays, medical assessments, and a report about his use of cocaine. From 1936, his personal physician Dr Theodor Morell remains at Hitler's side, always willing to hand out dubious treatments – up to 8 different medications daily, including one containing strychnine. Did Morell try to poison his employer? And was Hitler well enough to lead Germany? The American psychologist Nassir Ghaemi has doubts: he believes Hitler had bipolar disorder and used medications to excess. We give an exclusive and surprising insight into a previously unknown side of Hitler.

On the 17th of August 1987, Hitler's former deputy Rudolf Hess commits suicide in prison. It seems the 93-year-old hanged himself in the notorious Spandau prison for Nazi war criminals near Berlin. It marks the end of a life of mystery and intrigue. We investigate some of the riddles still surrounding Hess. What motivated him to single-handedly fly to Scotland on a secret mission in May 1941? Did he want to make peace with the UK? Whatever it was, it ended with his life-long imprisonment. And we explore Hess's last mystery: did he really kill himself or was he murdered – the last remaining prisoner at Spandau.

US scientists worked feverishly on developing the first atom bomb. They feared Hitler's Germany was about to build it before them. Later it was reported that the Germans had abandoned their plans. According to new documents, allied military reports and existing construction plans, Hitler had already tested a new kind of nuclear weapon in March 1945. How far did the Germans really get?