## Facts

- Joseph Nee, a Marshfield High School student, was prosecuted for conspiracy to commit murder based on planning a Columbine-style attack on the school.
- Evidence showed Nee and another student, Tobin Kerns, jointly developed a multi-stage plan involving firearms and explosives, including lists of supplies and intended victims.
- Nee participated in preparation, including acquiring or attempting to acquire materials, practicing with BB guns, discussing construction of explosives, and attempting to build and test a pipe bomb.
- Witnesses testified Nee recruited other students and threatened harm to anyone who reported the plan.
- On September 16, 2004, at Nee’s request, Nee and two other students met police and reported that Kerns planned to “blow up the school,” describing the plot in detail while denying their own involvement.
- Police arrested Kerns and recovered a notebook and other evidence consistent with the planning.
- At a jury-waived Superior Court trial, Nee was convicted of conspiracy to commit murder and sentenced to a house of correction term with a portion suspended and probation.

## Issues

1. Whether the evidence was sufficient to prove beyond a reasonable doubt that Nee intended to join an agreement to commit murder and that a conspiracy existed.
2. Whether Massachusetts recognizes a renunciation (abandonment) defense to conspiracy, and if so, whether Nee established it by reporting the plot to police.
3. Whether refusal to recognize or apply renunciation violated due process because the availability of such a defense was allegedly unclear at the time of the conduct.

## Decision

- The Supreme Judicial Court affirmed the conviction.
- The evidence, viewed in the light most favorable to the Commonwealth, permitted a rational factfinder to find an agreement to commit murder and Nee’s specific intent to join and further it.
- The trial judge did not err by declining to recognize a renunciation defense to conspiracy because Massachusetts had not adopted such a defense.
- Even assuming a renunciation defense could exist, Nee did not satisfy it because he did not manifest a complete and voluntary renunciation of his own criminal purpose while denying participation.
- Denial of a renunciation defense did not violate due process because Nee had fair notice of the conspiracy offense and the court’s ruling did not create an unforeseeable expansion of criminal liability.

## Legal Principles

- Conspiracy requires proof of an agreement to commit an unlawful act and the defendant’s specific intent to join and further that agreement; sufficiency is assessed by viewing evidence in the light most favorable to the prosecution.
- Massachusetts law does not recognize a Model Penal Code–style renunciation defense to conspiracy absent legislative adoption.
- Any renunciation defense, if recognized, would require complete and voluntary abandonment of the defendant’s own criminal purpose and conduct that thwarts the conspiracy; it is inconsistent to claim renunciation while denying one’s participation in the agreement.
- Due process is satisfied where the defendant had fair notice of the criminal prohibition and the court’s decision maintains existing law rather than creating an unexpected expansion of liability.

## Conclusion

The court upheld Nee’s conspiracy-to-murder conviction, holding that the evidence supported both agreement and intent, that Massachusetts had not adopted renunciation as a conspiracy defense, and that reporting the plot while denying one’s own role neither established renunciation nor created a due process problem.


Commonwealth v. Nee, 458 Mass. 174 (2010)