Oklahoma One Witness Against a Number is a criminal law concept in Oklahoma that allows a single witness to testify against a defendant in a criminal case. This means that instead of having multiple witnesses testify, the court only needs one witness to provide testimony. The concept is sometimes referred to as "single witness testimony" or "one witness rule". There are two types of Oklahoma One Witness Against a Number: direct and circumstantial. Direct testimony is given by a witness who has seen, heard, or experienced the crime firsthand. Circumstantial testimony is given by a witness who has knowledge of the facts and events surrounding the crime but did not actually witness the crime.