Mo. R. Crim. P. 25.19
As amended through October 1, 2024
Except as may be provided by a protective order entered by the court, counsel for the parties, including employees or agents of counsel for the parties, shall not advise any individual who has relevant material or information to not discuss the case with opposing counsel or their employees or agents, and shall not otherwise impede opposing counsel's investigation of the case. This rule does not apply to defense counsel advising defendant not to discuss the case with others.
Mo. R. Crim. P. 25.19