on his beloved cousin peter. >> i think pete is a little envious of robert. i think he felt his dad treated robert better than pete got treated when he worked there. he said something about his dad taking him out of the will. >> reporter: one thing, though. paul, like his second cousin dave, didn't think that pete was capable of making that bomb. somebody must have helped him. >> i just don't think pete has the technical ability to do it unless he seriously had some help. >> okay. so the type of thing that was done by somebody who is very intelligent, maybe has some know-how. >> that's kind of what you guys said, and i think that's right. >> who do you think is capable -- >> reporter: but remember, paul's ex-in-laws told detective salm that paul was more likely the guilty party. >> probably 90% paul. >> reporter: so now the