Television series Supernatural, which premiered in 2005, follows the adventures of brothers Sam and Dean Winchester who travel all over the continental US investigating monsters, many of which are based on folklore and myth. In the eleventh season episode "Just My Imagination", Sam and Dean handle a case where someone is ruthlessly killing Zână, kind creatures based on Romanian mythology that take the form of imaginary friends to care for lonely children.
Among the Zână seen in this episode is Nicky, a golden-tailed mermaid that appears to a child named Zoe. Nicky and Zoe seem to be close, but sadly Nicky is the killer's next victim. Nicky was played Ida Segerhagen.