The Castle of Hearts may have been smaller when compared to other Kingdoms, the Kingdom of Diamonds being quite vocal about such thinge but it had its secrets of its own that only the select would know—somehow, Sir Julius Ginellevé was one of them, although the story behind that was for another day. Within the castle walls, numerous hidden hallways were prevalent for someone to travel across the place without the need for any eyes to be laid upon you; he had taken advantage of it on some occasions.
Once the Hatter had been fully delivered to the Queen of Hearts, he had pushed the man easily through the walls—phasing through like a phantom, the Knight simply stayed at the same position and within earshot. One could hear what lay beyond the walls but they would be unaware of his presence, it was a good use to measure whoever actually served the King and the Queen and who were the ones who deserved to be punished.
And so the Queen of Hearts invited them to her drawing room.