I would think anyone privy to the situation would be handled the same way, by threat of death to them or loved ones. Maybe a little cash to ease the mental burden.
I'd like to think I could withstand such a threat like a fictional hero, but I have my doubts. I hope to never know for sure.
I do happen to know that for me to ignore murder took nothing more than the implied threat that I would be murdered myself by the team doing the murder. I learned my lesson; getting away with murder is not hard for people that are good at it.
I'd like to think I could withstand such a threat like a fictional hero, but I have my doubts. I hope to never know for sure.