| Court: | US Supreme Court |
| Facts: | An anonymous tipster gives a lot of very specific information about Mr. & Mrs. Gates's drug-running plans. Arrests ensue. |
| Posture: | Appeal of a motion to suppress the drug evidence. |
| Issue: | Was the search warrant granted on the basis of proper probable cause? |
| Holding: | Yes. |
| Rule: | The totality of the circumstances establishes probable cause. |
| Reasoning: | If the informant is right about some stuff, they might be right about more. |
| Dicta: | |