Henry: Portrait of a Serial Killer is a 1986 American psychological horror crime film directed and co-written by John McNaughton about the random crime spree of a serial killer who seemingly operates with impunity.
 It stars Michael Rooker as the nomadic killer Henry, Tom Towles as Otis, a prison buddy with whom Henry is living, and Tracy Arnold as Becky, Otis's sister.
 The characters of Henry and Otis are loosely based on real life serial killers Henry Lee Lucas and Ottis Toole.
Cold Fish (冷たい熱帯魚 , Tsumetai Nettaigyo ) is a 2010 Japanese horror-drama serial killer film directed by Sion Sono.
 The film is about a quiet and unambitious owner of a tropical fish shop whose life and family are taken over by a fellow fish entrepreneur who happens to be a serial killer.
 The film is loosely based on the exploits of two Tokyo serial killers, Sekine Gen and Hiroko Kazama, a husband and wife duo who owned a pet shop and murdered at least four people.
The Viña del Mar psychopaths (Spanish: "Psicópatas de Viña del Mar" ) was the name given to the Chilean serial killer duo Jorge José Sagredo Pizarro (August 22, 1955 - January 29, 1985) and Carlos Alberto Topp Collins (January 25, 1950 - January 29, 1985).
 They committed ten murders and four rapes from August 5, 1980 to November 1, 1981, in the city of Viña del Mar.
 They are also known for being the last men to be executed in Chile.
My Friend Dahmer is a 2017 American biographical drama film written and directed by Marc Meyers about the American serial killer Jeffrey Dahmer.
 It is based on the 2012 graphic novel of the same name by cartoonist John "Derf" Backderf, who had been friends with Dahmer in high school in the 1970s, soon before Dahmer began his killing spree.
 The film stars Ross Lynch, Alex Wolff, Dallas Roberts, and Anne Heche.
The Silence of the Lambs is a 1991 American horror-thriller film directed by Jonathan Demme and starring Jodie Foster, Anthony Hopkins, and Scott Glenn.
 Adapted by Ted Tally from the 1988 novel of the same name by Thomas Harris, his second to feature the character of Dr. Hannibal Lecter; a brilliant psychiatrist and cannibalistic serial killer, the film was the second adaptation of a Harris novel featuring Lecter, preceded by the Michael Mann-directed "Manhunter" in 1986.
 In the film, Clarice Starling, a young U.S. FBI trainee, seeks the advice of the imprisoned Dr. Lecter to apprehend another serial killer, known only as "Buffalo Bill".
Raman Raghav 2.0 is a 2016 Indian neo noir psychological thriller film directed by Anurag Kashyap.
 Nawazuddin Siddiqui plays the role of Ramanna, a psychopathic serial killer inspired by a serial killer who operated in Mumbai during the mid-1960s named Raman Raghav.
 Vicky Kaushal plays Raghavan, a cop assigned to investigate the serial killings.
 The film premiered at the Cannes Directors’ Fortnight to a positive critical reception, raising hopes of a good showing at the box office.
 It was released on 24 June 2016.
Marc Meyers is an American feature film director and screenwriter.
 He is best known for his fourth feature film "My Friend Dahmer" and the previous "How He Fell In Love."
The Killer Department: Detective Viktor Burakov's Eight-Year Hunt for the Most Savage Serial Killer in Russian History is a 1993 non-fiction book about a Russian serial killer Andrei Chikatilo by Robert Cullen.
 It was made into a feature film titled "Citizen X" in 1995.
The Return of Chandu is a 1934 American 12 episode fantasy film serial based on the radio series "Chandu the Magician".
 It was produced by Sol Lesser and directed by Ray Taylor, and starred Béla Lugosi as Frank Chandler (aka Chandu the Magician).
 The serial was originally released to be booked by theaters in any one of three ways: as a conventional serial of twelve chapters of equal running times; as a 60-minute feature film comprising the first four episodes, to be followed by the remaining 8 episodes in serial format; or as a stand-alone feature (the fourth episode ends not with a cliffhanger, but with an apparent resolution to the story).
 In 1935, the remaining 8 episodes of the serial were also edited into a feature film, of 65 minutes, released as "Chandu on the Magic Island".
 This serial marked one of the few times that Lugosi played a protagonist rather than an antagonist: in fact, Lugosi had played the main villain, Roxor, in the previous year's film called ("Chandu the Magician".)
His birth-name translates to 'God Among Us' in his native Creole.
 His first feature film was "Trial of a Serial Killer" in 1997; he has since had roles in such film projects as "", "Steal This Movie!
" (as Bobby Seale), the independent feature "Fizzy Bizness", and the feature film "The Invisible".
 Panou has also appeared in television shows including "Caprica", "I Was A Sixth Grade Alien", "Stargate SG-1", and "Stargate Atlantis".

Question: Mar Meyers fourth feature film is about which serial Killer ?
Answer: Jeffrey Dahmer