>> the first thing they told us was a wiretapping incident. >> reporter: wiretapping? >> yes. >> reporter: dave and sue claimed paul tapped his wife's phone to spy on her during divorce negotiations and, sure enough, here are the court documents. in 1997 paul was arrested on four counts related to tapping both his wife's and in-laws' phones. he pleaded guilty to one count of electronic eavesdropping, a felony. the other charges were dropped, and paul served no jail time. but the wiretapping story was just a prologue to what they were really there to talk about. >> who do you think is capable or responsible for actually setting up an explosive device in that panel? >> i think, like, probably 90% paul. >> but david and susan couldn't really give a reason why paul would want to kill roberto other than they felt paul just had that kind of personality to do something like that, while pete didn't. >> so you don't think peter is