Possibility that your husband could have wanted him dead. Police zeroed in on someone at work. He was pretty angry about that accusation . Yes, he was initially angry, yes. Angry enough to kill . Who knows. Was his new wife in danger, too . I am scared to death. Brace yourself, because this killer was stone cold evil. Wow, this is this has got me shaken. Im lester holt, and this is dateline. Heres josh mankowitz with the devil in disguise. Reporter in this world we like to think that we can tell the difference between good and evil. But sometimes evil puts on a mask and comes to lifes party as its opposite, a loved one, a friend, someone we think we can help. And by the time we figure out that were wrong, its too late. And so with that in mind, meet Frank Rodrigues, a guy who went looking for troubled souls. He was very drawn towards people that were broken, even though i dont have a lot i just want, you know, what i have, i want to give. Reporter frank gave a lot. Did a lot of good in