Heard of Ira Aldridge? It matters not. This show exhumes the 19th century black actor and brings him vividly back to life, telling the story of how he took a fellow thespian’s advice when he was 17 and went to England, where he would not face racial prejudice. It’s well-acted by Ryan Vincent Anderson, who shifts credibly between Aldridge and a variety of supporting characters, making each unique; Jeffrey Wienckowski’s direction is first-rate, highly attentive and never arbitrary. If there’s a flaw it’s in Rick Creese’s script. The show is heavy on exposition, though some of it is by necessity, dealing as it does with a largely forgotten figure; the text is solid for the most part but ventures into the mundane at times.