In the second episode of Fortitude we see Yuri entering the empty police station in order to return the rifle that the sheriff lent him. While searching through the place he finds a pair of handcuffs with an inscription on them. He examines the handcuffs, looks surprised and swears.
What was so specific about these handcuffs? Do we know what was written on them?
In episode 6 we find out that some handcuffs are important to the plot. Are these the same handcuffs? If so, how did Yuri know that?