Page 170 The suit, Maggie says its feels funny, Harry picking it up can sense the latent magic. Is Maggie sensing the same thing? But has no context to know what she is feeling is magic.
Page 243 Harry palms the used ampoule. Harry uses magic (sleight of hand) learnt from his father are there other examples in the Files? In Wild Card perhaps it wasn’t dumb luck that Harry beat Puck at cards. Puck was so carefully watching for Harry to use magic to cheat, that Harry used sleight of hand to which Puck was totally oblivious to. Page 271 shows Harry being taught by his father.
Carlos was on the look out for magic, so Harry used sleight of hand.
Page 300 Harry uses sleight of hand again with the Opal.
Page 320, Harry as Warden has an internal compass telling him where the island is. Does it work in the Never Never. kemmler would have had the same until he ceased to be a Warden making it difficult to physically located Demonreach in the mortal world, especially if he had previously only travelled to it via the Never Never.