More on the case against De Lorean, 'cause it's interesting history and a textbook case of entrapment:

  On October 19, 1982, DeLorean was charged with 
  trafficking in cocaine by the U.S. government, following 
  a videotaped sting operation in which he was recorded by 
  undercover Federal agents agreeing to bankroll a $1.8 
  million, 100 kg cocaine smuggling operation in exchange 
  for a $24 million cut of the eventual profits. The 
  government was tipped off to DeLorean by confidential
  informant James Timothy Hoffman, a former neighbor, who 
  reported to his FBI superiors that DeLorean had 
  approached him to ask about setting up a cocaine deal; in 
  reality, Hoffman had called DeLorean and suggested the 
  deal (which DeLorean then accepted) as part of his 
  efforts to receive a reduced sentence on a 1981 Federal 
  cocaine trafficking charge that he was awaiting trial on. 

http://en.wikipedia.org/wiki/John_DeLorean#Arrest_and_trial

and further:

  At this point, DeLorean became suspicious that he had 
  become involved in a dangerous and illegal operation, 
  possibly involving illegal narcotics or organized crime 
  (or both); he felt that he needed to remove himself from 
  the situation as soon as possible.
  [...]
  However, in the face of a thinly-veiled threat by Hoffman
  that DeLorean’s daughter would be murdered if he backed
  out of the deal, DeLorean continued to communicate with Hoffman. 

http://blog.legalsolutions.thomsonreuters.com/legal-research...