In hindsight, the post on Instagram should have raised more red flags. The image purported to show actress Mia Goth, just days after filing for divorce from actor and filmmaker Shia LaBeouf, posing in a T-shirt with a pointed message: MY EX IS MY BIGGEST FAN. To really drive home the point, the song "Single Ladies (Put a Ring on It)" by Beyoncé was added to the post.
It would have been out of character for the star of Pearl, who doesn't have much of a social media presence, if any. But the Instagram account that posted it, @miagoth_, had more than a million followers and was marked with a blue "verified" checkmark. Within days, the image ra …