The name of the sole witness to the occurrence is not mentioned in Allen's book.

I was the sole surviving witness to what he's capable of doing.

I'd almost tagged him with the truth, but the sole other witness had died in a car explosion.

And finds herself the sole witness in a secret federal investigation.

They had been the sole witnesses, their testimony being offered as the only sources of evidence during the trial.

The sole witness: A police officer who chased him for several streets.

"Not without the sole witness who could testify against them?"

If you think it's irregular for a judge to be the sole witness, you're right.

He was about to be the sole witness to a robbery.

Often I have the feeling of being the sole witness to a significant happening.