电影《牙鬼》是一部以牙仙传说为背景的恐怖片。影片中，单亲妈妈索菲娅和女儿海伦娜搬进了新家，却发现这个新家隐藏着一个不为人知的秘密。海伦娜的第一颗牙齿掉落后，她说晚上有牙仙来探访她，并告诉她了关于这个新家的一些秘密。接着，灾难降临，车祸使得母女俩的生活发生了翻天覆地的变化。

影片中，牙仙的传说渗透到了整个故事中。海伦娜相信牙仙的存在，画下了牙仙的恐怖身影，甚至购买了别的同学的乳牙。这些事件让索菲娅感到非常担忧，她不知道母女俩是否已经迈向了恐怖阴冷、万劫不复的深渊。

除了牙仙的传说，影片还通过车祸展示了母女俩生活中的变化。索菲娅作为单亲妈妈，经历了与前夫罗伯特的离婚，而海伦娜的第一颗牙齿掉落和车祸让她变得更加害怕和沉默寡言。这些变化让故事更加引人入胜，也让观众更加深入地体验到了角色的情感变化。

总的来说，电影《牙鬼》是一部非常引人入胜的恐怖片，通过牙仙传说和角色的情感变化，让观众深入体验到了故事的恐怖和扣人心弦的氛围。

The movie seems to be a story about a woman Sophia and her daughter Helena. Sophia ended her failed marriage with ex-husband Robert and moved into a new apartment with her daughter.

The protagonist Sophia in the movie is played by actor Harriet MacMasters-Green, and her daughter Helen Na is played by actor Sabrina Jolie Perez. In the new apartment, Sophia and her daughter began to experience a series of strange events. They discover that a mysterious woman enters people's dreams and pulls out their teeth. When Sophia starts to investigate, she not only discovers who this woman really is, but also a terrible secret that hides it all.

Also, the mentioned Jarreth J. Merz seems to be a supporting character in the film , he played Sophia's ex-husband Robert. This movie seems to be a very good thriller, full of horror and suspense. If you like this type of movie, you will definitely be interested in this one.