Lilya's friend and her husband, Pasha
WHY did they went straight to the police and gave a damning statement, before even talking to Kolya? And then they have the guts to come adopt his son? Some friends these guys were!
shareTo be fair, they could only go by what they saw.
They saw Kolya beat up his wife and Dima and threaten to kill them.
They don't know if he was a murderer or not, but they believe he was based on what they saw when Kolya flew into a rage.
And of course they adopted his son, because they feel bad for the kid. They knew his parents and Lilya for many years.