It was a worried Clark Olofsson and an even more worried robber, Jan-Erik "Janne" Olsson, who stood in the bank vault and waited for the police to break into Kreditbanken at Norrmalmstorg in Stockholm on the evening of 28 August 1973.

Olsson was convinced that he would be killed when the police caught him.

It appears from the security police's tape recording from the vault.

Parts have been played before, but in SVT's Kriminalarkivet several new games are presented that have been improved acoustically with the help of modern technology.

- Do you know what I think?

They are killing me now when I come out, the robber Jan-Erik Olsson is heard saying in the tape recording.

The robber Jan-Erik Olsson and Clark Olofsson.

Photo: Archive photography

The hostage is heard trying to comfort the robber

After a five-day siege, the police were finally able to free the hostages and arrest Jan-Erik Olsson and Clark Olofsson, whose role in connection with the robbery was extremely unclear at the time.

But burglary did not go as planned.

After injecting tear gas into the vault, they had problems breaking in through the arch door and it took as long as 38 minutes before they succeeded.

During that time, the robber could very well have injured or even killed the hostages.

But in the tape recording, you can hear how the hostages are almost trying to comfort and calm the criminals.

You also hear how Olsson and Olofsson try to communicate with the police through the arch door.

Hear more in the clip above.

The Stockholm syndrome is criticized

The program strongly criticizes the idea of ​​a special "Stockholm syndrome" where the hostages are almost brainwashed to take the robber's side against the police.

- It is instead about a logical survival strategy.

If there is anything that is unique about the Norrmalmstorg drama, it is rather the robber's and Clark Olofsson's way of connecting to his hostage, says Lasse Lampers.

See Kriminalarkivet: Norrmalmstorgsdramat already now on SVT Play, or on Thursday at 22:50 in SVT1.