A spectator chooses a card and it’s returned to the middle of the deck. The cards are spread and one card is face up, but it’s not the spectator’s cards, it’s a five. The magician counts five cards further down in the deck and turns over … the spectator’s card.
You can also view this trick on YouTube at https://youtu.be/S_QhWd51aC8
You can see all the previous magic lessons here.