No Sami was the one leading a double life. The police discovered he had many aliases, several mobile phones and acquaintances that Mark knew nothing about. What Mark was told by the police really shocked him as he had no idea of his fathers activities.
Mark murdered and buried his fathers body then went all out to cover his tracks; I'd call that leading a double life.
Amazing how one minute Mark claims to be upset by his fathers murder, then the next he's publishing details relating to his father that could have the potential of painting him in a poor light.
Even you are discrediting his father, on Marks behalf, as though he were the perpetrator?
Though I do not believe there is any malice in what you are doing Daisy.
The point is, Mark has convinced you with all his claims, so you may feel you need to defend him.
"There is a class of individuals who have been around forever and who are found in every race, culture, society and walk of life. Everybody has met these people, been deceived and manipulated by them, and forced to live with or repair the damage they have wrought. These often charming—but always deadly—individuals have a clinical name: psychopaths. Their hallmark is a stunning lack of conscience; their game is self-gratification at the other person's expense. Many spend time in prison, but many do not. All take far more than they give.
The most obvious expressions of psychopathy—but not the only ones—involve the flagrant violation of society's rules. Not surprisingly, many psychopaths are criminals, but many others manage to remain out of prison, using their charm and chameleon-like coloration to cut a wide swathe through society, leaving a wake of ruined lives behind them.
https://www.psychologytoday.com/us/articles/199401/charming-psychopath