Hate Story 2 is a 2014 Indian erotic thriller film directed by Vishal Pandya.
 Produced by T-Series Films, it stars Sushant Singh, Surveen Chawla and Jay Bhanushali in pivotal roles.
 It is the sequel to the 2012 sleeper hit "Hate Story" starring Nikhil Dwivedi, Gulshan Devaiya and Paoli Dam.
 The film released on 18 July 2014.
 It is the second installment of "Hate Story film series".
An Erotic thriller is a film genre defined by a thriller with a thematic basis in illicit romance or erotic fantasy.
 Though most erotic thrillers contain scenes of softcore sex, the frequency and explicitness of those scenes varies.
 If a film is a thriller with scenes of softcore sex or nudity, it is probably not an erotic thriller unless illicit romance or erotic fantasy is central to the dramatic conflict, as in "Body Heat", "Fatal Attraction", and "Night Eyes 3".
 Many crime thrillers, action films, and slasher films contain softcore sex and/or nudity but are not erotic thrillers.
 Likewise, if a film is not identifiably a thriller, it is probably not an erotic thriller but simply a work of softcore erotica or perhaps even erotic melodrama.
1920: The Evil Returns is an Indian horror film written by Vikram Bhatt and directed by Bhushan Patel.
 The film is a quasi-sequel to a 2008 film "1920", second of the 1920 (film series), and stars Aftab Shivdasani, Tia Bajpai, Vidya Malvade and Sharad Kelkar in the lead roles.
 The movie is third in a series of quasi-sequels released under the Bhatt Banner including "Raaz – The Mystery Continues", "Murder 2", "Jism 2", "Jannat 2" and "Raaz 3D" each of which had nothing to do with their respective prequels, but somehow fell in the same genre following a similar story.
 The trailer was released on 28 September 2012.
 The film released on 2 November 2012 to mixed reception and fared better at the opening Box Office weekend (122.7 million Net.)
 as compared to any other releases that week except Skyfall (270 million Net.)
. "
Boxofficeindia" declared the film as a "hit" after its two-week run.
 U Dinesh Kumar, Professor at IIM Bangalore and his team worked with Ami Shah of IntelliAssist, the company that carried out the social media marketing for the film, and assessed Internet activities and campaigns with the case study later published by Harvard Business Publishing.
Hate Story is a 2012 Indian erotic thriller film directed by Vivek Agnihotri and produced by Vikram Bhatt.
 It stars Nikhil Dwivedi, Gulshan Devaiya and Paoli Dam in lead roles and the film was released on 20 April 2012.
 As the first installment in the "Hate Story film series" the film was a commercial and critical success.
 The premise of the film chronicles a woman and her struggle to fight against the man that betrayed her.
Love Games is a 2017 Indian erotic thriller film directed by Vikram Bhatt and produced by Mukesh Bhatt and Mahesh Bhatt.
 The film stars Patralekha, Gaurav Arora and Tara Alisha Berry in the main cast.
 It was released on 8 April 2016.
Hate Story 3 is a 2015 Indian erotic thriller film directed by Vishal Pandya.
 Produced by T-Series, it stars Karan Singh Grover, Sharman Joshi, Zareen Khan and Daisy Shah in lead roles, and Priyanshu Chatterjee in a pivotal role.
 Written by Vikram Bhatt and Madhuri Banerji, the film belongs to the "Hate Story (film series)".
 The film was released on 4 December 2015.
Raaz 3 (also known as Raaz 3: The Third Dimension) (English: "Secret 3") is a Bollywood horror thriller film directed by Vikram Bhatt, and produced by Mahesh Bhatt and Mukesh Bhatt.
 The movie features Bipasha Basu , Emraan Hashmi and Esha Gupta as main characters.
 The film is the third installment in the "Raaz series", being a sequel to "", which itself was a sequel to "Raaz" which starred Bipasha Basu and Dino Morea.
 Bipasha Basu who was a part of the first film of the "Raaz" series, has made a comeback to the series after opting out of the second film.
 It was one of the films in a series of quasi-sequels released under the Bhatt Banner including "", "Murder 2", "Jannat 2", "Jism 2", "", "Murder 3" and "Aashiqui 2", each of which had nothing to do with their respective prequels, but somehow fell into the same genre following a similar story.
Bipasha Basu is an Indian actress who has featured in over 50 films, predominantly in Bollywood.
 After a successful career as a model, she made her film debut with a supporting role in Abbas–Mustan's thriller "Ajnabee" (2001), which won her the Filmfare Award for Best Female Debut.
 Basu followed this with a role in her first Telugu cinemathe action film "Takkari Donga" (2002).
 She had her first major success with the supernatural thriller "Raaz" (2002), which earned Basu her first Filmfare Award for Best Actress nomination.
 The following year, she starred opposite John Abraham in the erotic thriller "Jism", in which she played a seductive wife.
 She received a Filmfare Award for Best Performance in a Negative Role nomination for the film.
 Her roles in these films established her as a sex symbol.
Jism 2 (English: "Body 2") is a 2012 Indian erotic thriller film produced and directed by Pooja Bhatt and written by Mahesh Bhatt .
 It is the sequel to the 2003 film Jism and marks the debut of Indo-Canadian former pornographic actress Sunny Leone in Bollywood.
 "Jism 2" was launched on 1 December 2011, on popular Indian television show "Bigg Boss", making the launch a first time ever in the history of Indian Cinema.
 Mahesh Bhatt compared "Jism 2" to Italian romance drama Last Tango in Paris.
 Jism 2 has been passed with an A-certificate by the Central Board of Film Certification (CBFC) for strong sexual content.
 Jism 2 had paid previews on 2 August 2012, one day prior to its worldwide release.
Jism (English: Body ) is a 2003 Indian erotic thriller film edited and directed by Amit Saxena, written by Mahesh Bhatt, produced by Pooja Bhatt and Sujit Kumar Singh under the banner Fish Eye Network [P] Ltd and Shreya Creations, which starred Bipasha Basu and John Abraham, the latter making his début in Bollywood films.
 The music for the film was scored by M. M. Keeravani.
 "Jism" ranked 92 in the top 100 sexiest movie scenes poll conducted by Channel 4.
 The film is essentially a remake of "Body Heat", which was, in turn, loosely based on Billy Wilder's 1944 film "Double Indemnity", which was a version of James Cain's novel "Double Indemnity".

Question: Who was the writer of the 2003 Indian erotic thriller film who sequel is Jism 2?
Answer: Mahesh Bhatt