Polygraph Test Could Free Florida Murder Suspect

Gustavo Dubon offered a deal to prove his innocence by passing a lie detector test.
2:04 | 09/02/14

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Transcript for Polygraph Test Could Free Florida Murder Suspect
An unusual story about a murder suspect facing a big gamble. He has the chance to balk free without facing trial if he can prove his innocence by passing a lie detector test. It could backfire. Reporter: Gustavo dubond facing life in prison in the high-profile murder case of a prominent Florida businessman and facing a high haf stakes challenge from prosecutors. Agreed to take a polygraph, pass and walk free. But fail it and have it used against him at trial. He is accused of the brutal 2007 killing of Francisco Cuevas, a father of four. He was charged with kidnapping and first degree murder last year after police say he confessed. He has pleaded not guilty but in this shocking recording two detectives working the case caught on tape telling their supervisor they think dubond is innocent. Seriously, seriously, serious doubts Dubon had anything to do with it. Reporter: One detective failed to remove his microphone after reviewing an unrelated suspect in another case and it was released to the attorney for Dubon. They say he gave a false confession. He doesn't know where the body is. We don't know anything about the body. What you hear in that is an intelligent debate between two officers and their sergeant. Reporter: Greg Rossman still moving forward with the trial but offering the polygraph as a possible get out of jail free pass. If, in fact, the defendant passes the polygraph as to their involvement in the crime we drop the case. Reporter: According to the American polygraph association proponents say they're accurate around 90% of the time while critics would argue that's closer to 70%. The next hearing in the case set for Thursday and Dubon still undecided whether he will take the polygraph. For "Good morning America," Ryan smith, ABC news, New York.

This transcript has been automatically generated and may not be 100% accurate.

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