i.e. Frank, whose part included no actual words. He still managed with gestures and nonsense sounds to brilliantly and hilariously render his lines. For those who don't understand "Ghost," There was a "Ghost Translator" interpreting in English.
Here you see him in the beginning of the second act waiting for time to go on stage.
For the first time in a very, very long time I also had a part onstage as "Sara Wainwright," appearing in the first act of "The Trial of Ebenezer Scrooge", and cooling my heels in the green room during the second act until the curtain call.