With a possession with intent case, unless there is a confession, a controlled buy or a witnessed sale, the State will have to use circumstantial evidence to prove their case. Now if you have a few pounds a marijuana, then it will be easy for them to argue that the marijuana is not just for personal use. However, most cases are street level crack dealers and an expert is often used to prove their case. The case of State v. Reeds, 197 N.J. 290 (2009) provides a good overview of the law on this issue including what the State must do and must not do. Thus, a defense lawyer must be sure to hold the State to this standard with no deviation.
Our analysis begins with the Rules of Evidence, specifically Rule 702, which governs the admissibility of expert testimony and provides that “[i]f scientific, technical, or other specialized knowledge will assist the trier of fact to understand the evidence or to determine a fact in issue, a witness qualified as an expert by knowledge, skill, experience, training, or education may testify thereto in the form of an opinion or otherwise.” It is incumbent on the proffering party to show that (1) the intended testimony concerns a subject matter beyond the ken of an average juror; (2) the field is at a state of the art such that an expert’s testimony would be reliable; and (3) the witness has expertise sufficient to offer the intended testimony. See State v. Jenewicz, 193 N.J. 440, 454, 940 A.2d 269 (2008).
The use of expert testimony about the methods employed by drug traffickers to package and to distribute illegal drugs for sale has been long recognized as permissible under Rule 702 standards because such information is a specialized subject matter that is beyond the ken or normal life experience of the average juror. See Odom, supra, 116 N.J. at 76, 560 A.2d 1198 (permitting drug expert’s testimony, including opinion testimony on possessor’s likely intent and purpose to distribute based on particular characteristics of drug possession set forth through assumed facts). Such testimony, when provided through an expert, aids a jury’s understanding of the evidence adduced in a drug prosecution and often may be necessary to “explain the significance of the properties, packaging and value of illegal drugs.” Ibid. Without such testimony about drug-trade practices, lay jurors would not “`know what a person who possessed [a certain quantity of drugs in certain circumstances] was going to do with it.’” Id. at 76, 560 A.2d 1198 (quoting State v. Perez, 218 N.J.Super. 478, 485, 528 A.2d 56 (App.Div.1987)); see also Summers, supra, 176 N.J. at 312-17, 823 A.2d 15 (recognizing same).
Odom, supra, involved a drug possession case in which the prosecutor asked the State’s expert to assume a number of facts, and then stated a set of facts consistent with those adduced at trial. 116 N.J. at 67-69, 560 A.2d 1198. Based on the facts so presented, the prosecutor asked the expert to opine whether the defendant would have possessed the drugs for his own use or with the intent to distribute 1094*1094 them. Id. at 69, 560 A.2d 1198. In affirming on appeal the admission of that testimony, this Court explained that it was
satisfied in this case that the detective’s opinion was based exclusively on the surrounding facts relating to the quantity and packaging of the drugs and their addictive quality, as well as the absence of drug-use paraphernalia; his explanation of these facts was clearly founded on his expertise and specialized knowledge as an expert. The conclusion he drew — that possession of these drugs was for the purpose of distribution — was similarly derived from his experience. We therefore conclude that as long as the expert does not express his opinion of defendant’s guilt but simply characterizes defendant’s conduct based on the facts and evidence in light of his specialized knowledge, the opinion is not objectionable even though it embraces ultimate issues that the jury must decide.
[Id. at 78-79, 560 A.2d 1198.]
We also approved the use of a hypothetical question as an appropriate vehicle through which an expert could testify in respect of inferring intent or purpose when drugs are possessed under certain circumstances. See id. at 76-81, 560 A.2d 1198. And, we reaffirmed the use of such hypothetical questions when that practice was called into question in Summers, supra, 176 N.J. at 311, 317, 823 A.2d 15.
Indeed, in Summers, supra, this Court relied again on Odom’s guidelines for the appropriate use of a hypothetical question:
The question must be limited to the facts adduced at trial. The prosecutor may ask the expert to express an opinion, based on those facts, whether the drugs were possessed for distribution or for personal consumption. The expert should inform jurors of the information on which the opinion is based, and must avoid parroting statutory terminology whenever possible. Obviously, the expert must walk a fine line. His or her opinion can be “expressed in terms of ultimate issues of fact, namely, whether drugs were possessed with the intent to distribute,” but it cannot contain an explicit statement that “the defendant is guilty of the crime charged under the statute.” Finally, trial courts should instruct the jury in respect of the proper weight to be given to the expert’s opinion, reminding jurors that the ultimate decision concerning a defendant’s guilt or innocence rests solely with them.
[Id. at 314-15, 823 A.2d 15 (quoting Odom, supra, 116 N.J. at 80-82, 560 A.2d 1198) (internal citations omitted).]
Thus, we carefully permit an expert to express an opinion in response to a hypothetical even when such testimony “embraces an ultimate issue to be decided by the trier of fact,” N.J.R.E. 704, so long as the probative value of the circumscribed testimony is not substantially outweighed by the risk of causing undue prejudice, N.J.R.E. 403. See State v. Berry, 140 N.J. 280, 298, 658 A.2d 702 (1995) (explaining necessity for Rule 403 balancing, stating that “[i]n drug prosecutions, the risk of prejudice has prompted courts to exercise caution in determining whether expert testimony touching on ultimate issues properly was admitted at trial.”).
Because it is the exclusive responsibility of the jury to determine guilt, State v. Simon, 79 N.J. 191, 199, 398 A.2d 861 (1979), there is always the concern about the potential for an expert’s opinion on a hypothetical question to slip dangerously close to usurpation of the jury’s role by essentially telling the jurors how to resolve a case. See State v. Nesbitt, 185 N.J. 504, 514, 888 A.2d 472 (2006) (discussing court’s duty to perform gatekeeper role in determining whether testimony is reasonably needed and is not unduly prejudicial); see also Odom, supra, 116 N.J. at 1095*1095 81-82, 560 A.2d 1198. To guard against that concern, Odom emphasized that, when using a hypothetical question in cases involving possession and distribution of narcotics, the question must be limited to the evidence adduced at trial and must focus on
the manner of packaging and processing for use or distribution, the significance of various quantities and concentrations of narcotics, the roles of various drug paraphernalia, characteristics of the drugs themselves, the import of circumstances surrounding possession, the conduct of the possessor and the manner in which drugs may be secreted or otherwise possessed for personal use or [distribution].
[Odom, supra, 116 N.J. at 81-82, 560 A.2d 1198 (quoting State v. Odom, 225 N.J.Super. 564, 573, 543 A.2d 88 (App. Div.1988)).]
Once that foundation is established, the prosecutor may ask the expert to express an opinion on whether, based on those facts, the drugs were possessed for distribution purposes or personal use. Id. at 82, 560 A.2d 1198.
Odom continues to govern the use of expert testimony in narcotics prosecutions, permitting the incorporation of responses to hypothetical questions to help jurors understand the likely intent or purpose of a defendant in respect of drugs possessed. That said, Odom’s continued application is not without boundaries. In Nesbitt, supra, we cautioned that “Odom does not license the use of a narcotics expert to tell a jury that which is obvious.” 185 N.J. at 514, 888 A.2d 472. Because Odom should not result in the automatic use of expert testimony in all drug cases, we explained in Nesbitt that
[t]rial courts are expected to perform a gatekeeper role in determining whether there exists a reasonable need for an expert’s testimony, and what the parameters of that testimony may be. . . . The failure of a defendant to object to expert testimony does not relieve the trial court of its gatekeeper responsibilities.. . .
[Id. at 514-15, 888 A.2d 472.]
The Nesbitt Court instructed trial courts to be sensitive to whether there is true need for the hypothetical and expert testimony, id. at 517-19, 888 A.2d 472, and underscored the importance of preventing the expert testimony from tracking too closely the language of the pertinent criminal statute. Id. at 517, 888 A.2d 472. Further, Nesbitt discouraged the use of legal terminology with specialized meanings and emphasized Odom’s requirement that the governing statutory language be paraphrased where possible. Id. at 518-19, 888 A.2d 472. By adhering to such cautionary instructions, trial courts can ensure that a drug expert’s testimony plays a legitimate and valuable role in drug possession and distribution cases by helping the jury in realms unknown and unfamiliar to them when assessing the likely intent of a putative drug trafficker.