1.   Rupert is expected to be a key witness at the trial.

2.   She will be a key witness in the murder trial.

3.   He is expected to be the key witness at the trial.

4.   Another subject of much speculative comment was the disappearance of four of the seven original co-accused, who were key witnesses and whose absence threatened the prosecution case.

5.   Because before the case came to court, key witness Alan Chalky White was found murdered in the Cotswold Water Park.

6.   But in a statement, Northamptonshire police said Miss Jarrett, the key witness, declined to appear before the court through fear.

7.   He claimed two key witnesses at his trial had committed perjury.

8.   Although originally charged with murder, prosecutors pleaded the case down to manslaughter when a key witness wavered in her testimony.

9.   And although he is a key witness in the case, investigators have been unable to locate him.