Question: Dina Meyer played Detective Allison Kerry in an American horror franchise that consists of how many feature films?

Context paragraphs:
The Movie Hero: The Movie Hero is a 2003 American romantic comedy film starring Jeremy Sisto, Dina Meyer, and Peter Stormare.  It was written and directed by Brad T. Gottfred.

Bats (film): Bats is a 1999 American adventure-horror film, directed by Louis Morneau and produced by Bradley Jenkel and Louise Rosner.  The film stars Lou Diamond Phillips, Dina Meyer, Bob Gunton and Leon.  It was the first film released by Destination Films.

A Nightmare on Elm Street (franchise): A Nightmare on Elm Street is an American horror franchise that consists of nine slasher films, a television series, novels, and comic books.  The franchise began with the film "A Nightmare on Elm Street" (1984) created by Wes Craven.  The franchise revolves around the fictional character Freddy Krueger, a former child killer who stalks teenagers in their dreams and kills them.  His motives were to seek revenge on their parents, who had burned him alive.  The original film was written and directed by Craven, who returned to co-script the second sequel, "" (1987), and to write and direct "New Nightmare" (1994).  The films collectively grossed over $457 million at the box-office worldwide.

List of Saw cast members: The list of "Saw" cast members is a list of actors who voiced or portrayed characters appearing in the "Saw" franchise created by James Wan and Leigh Whannell.  The only actors to appear in all seven films are Tobin Bell (Jigsaw), who is also the only actor to film scenes for every film in the series, and Shawnee Smith (Amanda Young), who appears via archive footage in the three films she does not feature in prominently.  Complementing them on screen are actors ranging from renowned status such as Danny Glover, Cary Elwes, and Donnie Wahlberg to lesser-known actors such as Dina Meyer and Lyriq Bent, among others.  While many actors reprise their roles for cameos and minor appearances, the only actors besides Bell and Smith to appear with major roles in more than three films were Costas Mandylor (Mark Hoffman) and Betsy Russell (Jill Tuck), both of whom appear in the latter five instalments of the series.

Saw III: Saw III is a 2006 American horror film directed by Darren Lynn Bousman from a screenplay by Leigh Whannell and story by James Wan and Whannell.  It is the third installment in the "Saw" franchise and stars Tobin Bell, Shawnee Smith, Angus Macfadyen, Bahar Soomekh, and Dina Meyer.  "Saw III" marks the first appearances of Costas Mandylor and Betsy Russell, albeit minor roles; they would later become major characters in the series.

Silent Night, Deadly Night (franchise): Silent Night, Deadly Night is an American horror franchise consisting of six feature films, action figures, clothing, stockings, Christmas ornaments, and other memorabilia.  The first film in the series, "Silent Night, Deadly Night" (1984), originally titled "Slay Ride", tells the story of Billy, a young man who experiences a psychotic break and goes on a murder spree dressed as Santa Claus.  The film received theatrical distribution from TriStar Pictures, but was pulled from theaters in November 1984 after a series of protests against the film.

Saw (franchise): Saw is an American horror franchise distributed by Lionsgate, produced by Twisted Pictures and created by James Wan and Leigh Whannell, that consists of eight feature films and additional media.  In 2003, Wan and Whannell made a short film to help pitch as a potential feature film.  This was successfully done in 2004 with the release of the first installment at the Sundance Film Festival.  It was released theatrically that October.  The sequels were directed by Darren Lynn Bousman, David Hackl, and Kevin Greutert, and were written by Wan, Whannell, Bousman, Patrick Melton, and Marcus Dunstan, and were released subsequently every October, on the Friday before Halloween, between 2004 and 2010.  Both of the creators remained with the franchise as executive producers.  On July 22, 2010, producer Mark Burg confirmed that the seventh film, "Saw 3D", is the final installment of the series.  Lionsgate reportedly expressed interest in continuing the franchise in 2012 with a reboot.  However, in November 2013, it was reported that they were in active development of a sequel.

Dina Meyer: Dina Meyer (born December 22, 1968) is an American film and television actress who played Barbara Gordon in "Birds of Prey", Dizzy Flores in "Starship Troopers", and Detective Allison Kerry in the "Saw" films.  She portrayed Mrs. Hong as a recurring guest star on ABC's "Scoundrels".

Saw II: Saw II is a 2005 American horror film, a sequel to 2004's "Saw" and the second installment in the "Saw" franchise, directed and co-written by Darren Lynn Bousman and series creator Leigh Whannell.  The film stars Donnie Wahlberg, Franky G, Glenn Plummer, Beverley Mitchell, Dina Meyer, Emmanuelle Vaugier, Erik Knudsen, Shawnee Smith, and Tobin Bell.

Piranha 3D: Piranha 3D is a 2010 American 3D horror comedy film that serves as a loose remake of the 1978 horror film "Piranha".  It was directed by Alexandre Aja and has an ensemble cast featuring Elisabeth Shue, Adam Scott, Jerry O'Connell, Ving Rhames, Steven R. McQueen, Jessica Szohr, Christopher Lloyd, Richard Dreyfuss, Dina Meyer, Kelly Brook, Riley Steele, and Eli Roth.

Supporting paragraphs: Dina Meyer Saw (franchise)
Answer: eight