Inside Out is a 1975 British action thriller film, produced and directed by Peter Duffell, and starring James Mason, Robert Culp, and Telly Savalas.

The film, shot in West Berlin and the Netherlands, aired on television in the United States on NBC on 1 January 1978 under the alternate title Hitler's Gold.

In 1975, Harry Morgan and Sylvester "Sly" Wells come up with a plan to recover six million dollars of Nazi gold, lost since the end of World War II.

A crew of Wehrmacht soldiers is driving a cargo truck through the Black Forest when they are stopped by a road block of SS commandos.

Thirty-four years later, Harry Morgan is driving his Rolls-Royce home in London, where a repossession agent is waiting to confiscate the car.

He enters his family's apartment, where he has a brief conversation with his wife, Meredith (Lorna Dallas), about their debts and the building that is soon to be sold.

The driver, named Hans Schmidt, presented the order to the railroad official in charge to receive the cargo that was intercepted by a convoy of SS officers.

During the war, an order could be countermanded by Adolf Hitler, Heinrich Himmler, Hermann Göring, Martin Bormann, Rudolf Hess, or Reinhardt Holtz.

A few days later, Harry travels to Amsterdam to find Sly playing chess with a Dutch teenage boy in a pub.

Peter's employee, named Siggi, brings her friend Erika Kurtz (Doris Kunstmann) to meet Harry.

They arrange to have Udo Blimperman (Peter Schlesinger), an obese costume shop owner, give them the uniforms they need, in exchange for unlimited meals.

The next morning, Harry wakes up to find that Sly and Erika had been playing chess all night, and that Udo had ordered another large meal for himself.

Prior tells everyone about the security procedures at the prison, where the only man to speak to Holtz is a doctor named Maar.

Sly informs Schmidt about his idea to stage a confidence game to trick Holtz, and use Erika as an assistant.

Knowing the police will not believe him, Maar agrees to switch places with Holtz, while Harry and Sly accompany them, disguised as United States Army officers.

As they arrive at the derelict courthouse, they change Holtz from Maar's borrowed civilian street clothes into a replica of his old Nazi uniform.

Holtz whispers to Schmidt (still disguised as Hitler) that the gold is hidden in his bunker, which is on the property of his summer home in Vanglitz.

Schmidt gets carried away with his acting, while Ernst is worried Holtz may recognize the scam, and that their cover can still be blown by him reporting the incident to the prison guards.

Sly proposes to return Holtz first thing in the morning before going after the gold, but Harry refuses to wait, worried that it could be found by anyone at any time.

He steps into another room and conceals a Walther PPK in his belt, while he calls Colonel Kosnikov of the Russian army.

He reroutes his troops to the apartment building, and provides the group with equipment to impersonate a bomb disposal unit.

When the team returns to West Germany, they are confronted by the checkpoint guard about their flags on the wrong sides of the car's hood.