At the end of 'Fantastic Beasts and where to find them'Fantastic Beasts and Where to Find Them, Newt helps to obliviate all No-majs by using Swooping evil's venom. Somehow, I don't understand why Jacob only forgets everything he has done together with Newt when he's walking into the rain. There's a guy shown in the shower who seems to lose his memory, too and he's not standing outside.