when nowak orders the hit. nowak has no idea he's really dealing with an undercover federal agent code-named the reaper. >> and it was the reaper who was supposed to actually commit the murder to -- and dispose of the body and the motor vehicle. >> quick: at their second meeting, the reaper tells nowak the job is done, the agent is dead. >> mr. nowak paid the second installment of $10,000. and it is after the payment of that second installment that the arrest was effected. >> quick: randy nowak is tried and sentenced to 30 years in prison for attempted murder. >> he was a calculating psychopath, in my view. he wanted her "deleted" to ensure that he could avoid his tax obligation. >> quick: two years later, another american taxpayer goes after the irs with a vengeance. >> the whooshing sound airplanes make -- it was whoosh and roar and boom. >> quick: 53-year-old andrew joseph stack flies his single-engine plane into an irs building in austin, texas, killing himself and an irs employee. stack has been in trouble