Harry rescued from Dursleys by Remus and Snape pre-Hogwarts fic
So, I read this fic years ago and just cant seem to find it now. As the title suggest, a young Harry is rescued from the Dursleys by Remus and Snape. From what I remember Remus just wanted to see Harry but when he found him in the cupboard, took him away. When Harry plays with a toy mouse, he mentions something about Wormtail, and they realise the whole switching of the secret keeper thing. Sirius is rescued, cut to a few years later and Harry is boarding the Hogwarts Express.
I can't really remember anything else, so if anyone has any idea what fic this could be that would be awesome!!