MBE Rules · Criminal Procedure
Knock and Announce
Hudson v. Michigan
The rule
Officers must knock and announce before entering unless futile or dangerous, but knock-and-announce violations do not trigger the exclusionary rule.
In plain English
The Knock and Announce rule requires police officers to knock and announce their presence before entering a property to execute a search warrant, unless doing so would be dangerous or pointless. However, if they fail to follow this rule, any evidence obtained during the search is not automatically excluded from trial.
Worked example
Police officers had a warrant to search a suspected drug dealer's home. They knocked and announced their presence but heard loud noises inside that suggested evidence was being destroyed. They forcibly entered the home and found illegal drugs. The evidence was admissible in court despite the knock-and-announce violation.
Memory hook
Knock, announce, but don’t lose your chance!
The trap
Exams may present scenarios where students assume that any knock-and-announce violation leads to exclusion of evidence, which is incorrect. Students might overlook the exceptions that allow for immediate entry.
How examiners test it
Questions often involve fact patterns where officers either follow or violate the knock-and-announce rule, testing the candidate's understanding of the exceptions and the implications for evidence admissibility.
Drill this rule until it can't fail you.
Vrenberg generates unlimited questions on this exact rule, tracks your mastery of it, and brings it back until it sticks.