As of my last update in early 2023, Ann LaBar was known as the author of the young adult novel "Trace of Shadows." LaBar's work often includes elements of mystery and Gothic themes, appealing to young adult readers who enjoy atmospheric, character-driven stories. Unfortunately, detailed biographical information on Ann LaBar is relatively scarce, and she has a limited public profile compared to more widely recognized authors. If Ann LaBar has released more works or details about her life have become more widely known since my last update, I recommend checking current literary databases or her publisher's website for the most up-to-date information.