Lucile McCall, is Scott McCalls, Twin sister.
When Lucile (or Luce for short) and Scott go out in the woods with their best friend , Stiles , to find a dead body both Scott and Lucile get bit by an "animal".
The next day Luce and Scott get experienced with both great hearing and unbelievable strength.
Luce, Scott and Stiles return to the woods to try and find Scott's inhaler which he dropped. While trying to find it they bump into Derek Hale and that's when Lucile Skye McCall feels that one pull.
After that Luce breaks out during the full moon, Shapeshifting into an actual wolf.
Will Derek fall in love with Lucile?
Will Lucile be able to control her Unsteady shift?