California Criminal Jury Instructions (CALCRIM) (2017)

201. Do Not Investigate

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201.Do Not Investigate
Do not use the Internet (, a dictionary/[, or <insert other
relevant source of information or means of communication>]) in any way
in connection with this case, either on your own or as a group. Do not
investigate the facts or the law or do any research regarding this case,
either on your own, or as a group. Do not conduct any tests or
experiments, or visit the scene of any event involved in this case. If you
happen to pass by the scene, do not stop or investigate.
New January 2006; Revised June 2007, April 2010, February 2012
Instructional Duty
The court has a sua sponte duty to instruct the jurors on how they must conduct
themselves during trial. (Pen. Code, § 1122.)
• No Independent Research. Pen. Code, § 1122; People v. Karis (1988) 46
Cal.3d 612, 642 [250 Cal.Rptr. 659, 758 P.2d 1189]; People v. Castro (1986)
184 Cal.App.3d 849, 853 [229 Cal.Rptr. 280]; People v. Sutter (1982) 134
Cal.App.3d 806, 820 [184 Cal.Rptr. 829].
Secondary Sources
6 Witkin & Epstein, California Criminal Law (3d ed. 2000) Criminal Judgment,
4 Millman, Sevilla & Tarlow, California Criminal Defense Practice, Ch. 81, Jury
Selection and Opening Statement, § 81.06[1], Ch. 85, Submission to Jury and
Verdict, § 85.05[4][a][i] (Matthew Bender).