Consistency is perhaps the better word.

I like to see a play run on simple lines to an end you can't but foresee.

The taste's barbarian, I don't doubt.' Miss Le Mesurier's lips instinctively pouted a mischievous 'bourgeois' towards Mallinson.

He remarked hastily that he thought the curtain was on the point of rising, and Miss Le Mesurier pushed her opera-glasses towards him with a serene 'Not yet, I think.' Mallinson understood the suggestion of her movement and relapsed into a sullen silence.
By the time that Conway and Drake rose to leave the box Mr.Le Mesurier had thought out his idea.

His manner changed of a sudden to one of great cordiality; he expressed his pleasure at meeting Drake, and shook him by the hand, but destroyed the effect of his action through weakly revealing his diplomacy to his daughter by a triumphant glance at her.
At the close of the performance he met Drake in the vestibule of the theatre and lingered behind his party.