Tailkinker

Chosen answer: Actors sometimes choose not to be credited, particularly in cases where they're playing a role much smaller than one would normally expect them to be playing.

Tailkinker ★

Answer: Spoiler alert: this gives some important plot twists away. Sometimes a bit of unresolved mystery improves a story, and I think this is the case here. But the book partly answers your questions. At the end of the last chapter it is shown that Mrs MacReady thinks the wardrobe is just a piece of furniture. She knows nothing about Narnia. But Professor Kirke amazes Peter, Edmund, Susan and Lucy by expressing familiarity with Narnia and explaining that a wardrobe might well be a portal into Narnia. If C S Lewis had not written any more books after completing "The Lion The Witch And The Wardrobe" Professor Kirke's knowledge of Narnia would probably have been an unresolved mystery. But C S Lewis later wrote "The Magician's Nephew" which tells how Professor Kirke visited Narnia as a boy. The final chapter of this book says he took an apple back with him, which he planted in his garden. It grew into a tree, was cut down and made into the wardrobe. So Professor Kirke was not consciously aware of what the wardrobe could do, but with hindsight, he realised that he had set up a chain of events that caused the children to discover Narnia.

Answer: While Professor Kirke is aware of the existence of Narnia, as he was there when it was created, he doesn't appear to be aware that the wardrobe can act as a portal (although he may suspect that it has unusual properties, as the tree from which the wood came to create it grew from a Narnian apple). Mrs MacReady doesn't know.

Tailkinker ★