The baritone Mark Stone provided stoic strength as Grimes’s friend Captain Balstrode, a voice of reason in the madness. (The Guardian).

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Mark Stone as Captain Balstrode kept the night on an even keel with his rugged baritone. (ArtsHub).

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English baritone Mark Stone was a strong vocal and dramatic presence as Captain Balstrode. (The Conversation).

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British baritone Mark Stone was a firm yet empathetic Balstrode, his voice rich with emotion in the final act. (Limelight).

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Mark Stone had me siding with his Balstrode before I could even gauge his loyalties. (Cut Common).