Watch It Earth Boy!

Aideen O'Connor is NOT one to be messed with and left. Especially for fifteen years. She has found 221B Baker Street, and she intends to bring up the past with Sherlock, in a rather painful way. After that, she, Sherlock, John and Molly make quite the trio! Rated T for caution. I'm not used to rating things K. Eventual OC/Mycroft.