Generate a question that has the following answer: jenna for the following movie plot: Max Matheson (Nick Stahl) was involved in a car accident over a year ago that kills his fiancee, Kayla (Jennifer Sipes). Due to the accident, he becomes emotionally disturbed and undergoes psychological treatment with Dr. Beaumont (Ann Mckenzie), making some progress in dealing with the guilt over the accident. To help Max move forward, his father, Jack Matheson (William Katt), reopens the Mayflower Department Store in New Orleans and invites Max to replace the security guard, who recently quit under mysterious circumstances while apparently "cutting himself up" on duty. Max accepts the job and his father introduces him to the store manager, Keller Landreaux (Lawrence Turner), the buyer, Jenna McCarty (Christy Carlson Romano), and the vice-president of operations, Ryan Parker (Jon Michael Davis). Before his first shift, Max sees a vision of a dead woman in a mirror, and then sees Jenna's reflection, ripping off her head. Meanwhile, Jenna is killed by her reflection, being thrown through glass doors and a shard of glass decapitating her. Max realizes that he foresees the deaths in the mirrors. That night, he tries to find the ghost, but instead sees Ryan's reflection being eviscerated. He tries to contact Ryan, but gets no response. Later, Ryan is killed, in the same way as his reflection. Max sees his father's face covered in cuts in a puddle then races to his father's house. Jack is almost killed by his reflection, after Max made it to his house and hints to whoever is manipulating the mirrors that he would do whatever she wants him to do if she spares his father. Max later returns to the Mayflower, but he is stopped by Detectives Huston and Piccirilli (Lance E. Nichols, Wayne Pere), explaining what happened in Ryan and Jenna's deaths. Max denies any involvement and, though they remain suspicious, they let Max get back to his work. Max goes to the main mirror, to find out who the ghost is. Suddenly, Max's reflection shows a light, which Max follows in each of the mirrors. He finds a box and opens it to...
Answer:
Which character is decapitated by glass?