You have to let him go , they say , but they don't understand , that letting him go is like ripping her own heart from her chest , letting him go is like driving a knife straight to her chest , it's like throwing herself in the ocean . Letting him go is learning how to breathe again, it's tearing a part from her skin and she doesn't know if she can

(I kind of hate myself for coming up with such an appropriate title.) The aftermath of 5x16. Stiles and Lydia make a disturbing discovery.

In the heady rush of emotions that is Senior Prom night, Lydia and Stiles finally do something they've been meaning to do for years. But this sets off a series of events which will lead Stiles to cross the Atlantic Ocean five years later with nothing but a London address to find the girl he loves, who has been hiding a huge secret.