Tilinteko 1987 on netflix

Two men, Nieminen and Varjola, commit a mail van robbery. Varjola betrays his friend: shoots him and takes the loot. Nieminen is arrested, but he refuses to reveal his accomplice’s name. On his first leave on prison Nieminen finds Varjola in a small town, where he has became the mayor. Varjola, of course, is shocked to see his old friend again.