Jim hides Spock after crash on Earth

[katielovesmusic.livejournal.com]

I'm looking for a fic I read awhile ago and cannot for the life of me find again. I believe it as a TOS fic where first contact never happened and Spock crashes on Earth. Jim then takes him in, though he doesn't know that Spock isn't human. Jim ends up helping Spock hide from people. I think Bones gets involved somehow? I also think I remember Jim's house having, like, an escape tunnel under it? I know this isn't much to go on. Thanks for any help I can get!