If you knew something awful/criminal about a family member would you tell his wife?

[amiarat]

A family member has been dealt with by the police today, the only reason I know about it is because I know the sister of the victim.

The family member in question has been accused of stuff of a sexual nature and I feel so sorry for the wife(who cannot stand her dh-don't know why she is with him) I know that they haven't shared a bed for 25 years and they are both miserable.

It really concerns me that he may do something even more serious (due to his family circs)and I cannot bear the fact that I know. Is it safer that she is ignorant?

Do you need to notify the wife at all? Surely if he has been seen by the police regarding the matter she will find out about it from them/him -perhaps she already knows. Have the police spoken to him?

Not sure if any children are involved, but the procedure back home if someone with a sexual record including kids was in a house with kids, was that they would be visited, given X days to tell their aprtner, ethen SS would tell the partner instead

If you married into the family, can you not tell your dh and then he can be the bearer of bad tidings? Does his aunt have any bad feelings towards him and, if not, would she believe him?