In 1999, I went to the main prison in Iceland and sat across from the so called ´most dangerous criminal of Iceland!” Now that may not sound so scary to someone in the UK or the US, where there are many dangerous criminals. However, In Iceland, this experience evoked a profound sense of apprehension.

In 1992 a young man was given this not so positive title by the Icelandic media. He had then in a short period of time attacked women in different parts of the country in the most brutal way one can think of.

Two bank robberies in 1995 were talked about as the perfect crimes, but were they?

The first time anyone one was shot dead in a police operation in Iceland was in December 2013. A 59-year-old man had been firing a shotgun from inside his Reykjavík apartment. When special forces broke into the man’s apartment, he fired at them and the police responded equally. This was one of the most read and shared stories on BBC that December because it was an unprecedented incident in Iceland.

A lorry driver comes across a young woman covered in blood trying to get away from a man and a car in south Iceland. She comes running and screaming in a panic towards the driver. "He tries to kill me" the young woman shouts repeatedly. A minute later the lorry driver ignores the woman and drives off.

In the summer of 1982, two friends, sisters, set out to explore the raw beauty of Iceland. A land, then untouched by mass tourism. What began as a carefree adventure through glaciers and black sands spiralled into terror when they crossed path with a man posing as a policeman.

Gunnar, the taxi driver accused of murdering another taxi driver in Reykjavik 1968, denies being involved, even though the murder weapon, Wesson 32 calibre pistol was found in his car. The police are certain they got the killer but can't make him confess he did it.

Early in the morning of January 1968 a 43-year-old taxi driver was found shot in the back of the head in his car in Reykjavik. A shockwave went through the society and taxi drivers in this small capital were terrified. Who could have done such a thing in this small peaceful city?

A Black Ice Special: Interview with Dr Gisli Gudjonsson.