Tell them.
The number of suspicious deaths involving a lady from Kiambu that I have seen are too many to ignore. And considering that most Kenyans don't order for portmortems, well... The science says that these men were killed. Recently, a lady poisoned her husband, but since he was a heavy drinker everyone assumed it was the beer. But alcohol doesn't cause a man to vomit blood and bleed from all orifices?!
Set out to correct the world's wrongs and you will most certainly wind up adding to them.