In 1947 the great treason trials were still going on.

A treason trial could be held in camera, for national security reasons.

After the war he was the chief prosecution witness at 20 treason trials.

The treason trial dragged on for four years but she was acquitted in 1961.

Rest easy, there'll be no treason trials within the family.

He was involved in further treason trials in later years.

She emerged as an infamous figure in a rare treason trial.

Months later, an appeals court ordered a second treason trial, which began in July and concluded today.

He prosecuted other treason trials arising out of the war.

Otherwise he could be subjected to a treason trial.