1. Minus Baskerville, the only other time Sherlock doubted himself was in September, at a train station. He saw three teenagers with luggage and an owl walked through a solid wall. He saw it but knew it wasn't possible.

2. Cleaning out the storage in his shop, Belle found a blue police box. Mr. Gold tried to open it, but when they came back, all they found was Ruby missing and a fez.

3. Thalia made friends with a girl named Max after she accidentally shot her in the leg, thinking she was a monster.

4. Two brothers came into George's joke shop after the battle at Hogwarts. Introduced themselves as Connor and Travis. Bought out a huge amount of shop. George eventually had to excuse himself from conversation to cry because they reminded him so much of him and Fred.

5. The first Librarian was a Timelord, bent on protective the alien and magical. The Library is actually a TARDIS (bigger on the inside) The first Guardian was originally a companion. Boom, your mind is blown.

I shall think of more later.