Kasautii Zindagii Kay (2018 TV series)

Anurag loses his memory. Komolika fakes an identity and misuses the opportunity to make Anurag and the Basu's believe that they got married. Prerna discovers Komolika's identity and decides to expose her but chooses to refrain in fear of affecting Anurag's brain and memory. Komolika tries to kill Prerna and her child multiple times but fails.

Prerna gives birth to Sneha and Anurag regains his memory. They rejoice and plan to marry. Komolika threatens to frame Prerna for murder by leaking footage of her pushing Viraj off the cliff. She further asks Anurag to accept her and leave Prerna. Helpless, Anurag pretends to betray Prerna and pushes her off a bridge, but she is saved by Bajaj. Prerna reaches the orphanage where Komolika abandoned Sneha and is devastated to see it on fire. Reeling from shock and heartbreak, Prerna moves to London.

Prerna is a successful businesswoman in London while Anurag's business thrives in Kolkata. Prerna maintains a formal relationship with Bajaj and Anurag hates Komolika. Prerna detests Anurag for his betrayal while he lives in guilt. Komolika has taken over the Basu house. Nivedita and Anupam have separated. Prerna leaves for Kolkata in order to seek revenge from Anurag. Kukki and Kaushik start off by disliking each other, constantly bickering everytime they meet.

• Parth Samthaan as Anurag Basu: Mohini and Moloy's son; Rakhi, Nivedita and Tapur's brother; Prerna's former husband; Komolika's husband; Sneha and Diya's father (2018–present)
• Erica Fernandes as Prerna Sharma: Veena and Rajesh's daughter; Shekhar, Shivani and Mahesh's sister; Anurag's former wife; Sneha's mother (2018–present)
• Hina Khan/Aamna Sharif as Komolika Chaubey Basu: Siddhant's daughter; Mishka and Ronit's sister; Anurag's wife; Diya's mother (2018–2019)/(2019–present)
• Karan Singh Grover/Karan Patel as Rishabh Bajaj: Samira's husband; Kukki's father (2019–2020)/(2020–present)

• Shubhaavi Choksey as Mohini Basu: Moloy's wife; Rakhi, Nivedita, Anurag and Tapur's mother (2018–present)
• Uday Tikekar as Moloy Basu: Prosenjit's brother; Mohini's husband; Rakhi, Nivedita, Anurag and Tapur's father (2018–present)
• Kanupriya Pandit as Veena Sharma: Rajesh's wife; Shekhar, Prerna, Shivani and Mahesh's mother (2018–present)
• Kali Prasad Mukherjee as Rajesh Sharma: Veena's husband; Shekhar, Prerna, Shivani and Mahesh's father (2018–2019)
• Pooja Banerjee as Nivedita Basu: Mohini and Moloy's daughter; Rakhi, Anurag and Tapur's sister; Anupam's former wife (2018–present)
• Sahil Anand as Anupam Sengupta: Nivedita's former husband (2018–present)
• Upasana Salunke/Priyal Mahajan/Aastha Abhay/Garima Parihar as Tapur Basu: Mohini and Moloy's daughter; Rakhi, Nivedita and Anurag's sister; Sahil's former fiance (2018)/(2018–2019)/(2019–2020)/(2020–present)
• Karan Arora as Shekhar Sharma: Veena and Rajesh's son; Prerna, Shivani and Mahesh's brother; Suman's husband (2018–present)
• Antara Banerjee/Ritu Chauhan as Suman Sharma: Shekhar's wife (2018–2019)/(2019–present)
• Charvi Saraf as Shivani Sharma: Veena and Rajesh's daughter; Shekhar, Prerna and Mahesh's sister; Ronit's former girlfriend (2018–present)
• Karan Bhanushali/Mridul Das as Mahesh Sharma: Veena and Rajesh's son; Shekhar, Prerna and Shivani's brother; Kajal's husband (2018–2020)/(2020–present)
• Adi Irani as Siddhant Chaubey: Komolika, Mishka and Ronit's father (2018–2019)
• Ariah Aggarwal as Mishka Chaubey: Siddhant's daughter; Komolika and Ronit's sister; Anurag's former girlfriend (2018–2019)
• Tarun Mahilani as Ronit Chaubey: Siddhant's son; Komolika and Mishka's brother; Shivani's former boyfriend (2018–present)
• Alka Amin as Sharda Bajaj: Bajaj's aunt; Tanvi's adoptive mother (2019)
• Sonyaa Ayodhya as Tanvi Bajaj: Sharda's adoptive daughter; Bajaj's family friend (2019)
• Namik Paul as Viraj Bhardwaj: Prerna's former fiance; Komolika's accomplice (2020)
• Sanjay Swaraj as Naveen Chandra Chattopadhyay: Ronita and Madhuri's husband; Mohini's namesake brother; Prerna's former fiance (2018–2019)
• Madhura Naik as Madhuri Chattopadhyay: Naveen's first wife (2018)
• Piyali Munshi as Ronita Chattopadhyay: Naveen's second wife (2018)
• Siddharth Banerjee as Sid: Anurag's best friend (2018)
• Anju Jadhav/Michelle Shah as Anjali: Prerna's best friend (2018)
• Monica Sharma as Kirti: Prerna and Anjali's best friend; Rohan's wife (2018)
• Naveen Sharma as Rohan: Anurag, Sid, Prerna and Anjali's best friend; Kirti's husband (2018)
• Rohit Sharma as Gaurav: Komolika's former boyfriend (2018)
• Roopali Prakash as Manisha: Komolika's friend (2018)
• Shahrukh Sadri as Prosenjit Basu: Moloy's brother; Kumud's husband; Mouli's father; Rakhi, Nivedita, Anurag and Tapur's uncle (2019)
• Anjali Gupta as Kumud Basu: Prosenjit's wife; Mouli's mother; Rakhi, Nivedita, Anurag and Tapur's aunt (2019)
• Coral Bhamra as Mouli Basu: Kumud and Prosenjit's daughter; Rakhi, Nivedita, Anurag and Tapur's cousin (2019)
• Bhavya Sachdeva as Sahil Sinha: Vikrant's cousin; Tapur's former fiance (2019)
• Siddharth Shivpuri as Vikrant Sinha: Sahil's cousin; Komolika's former boyfriend; Anurag's business rival (2019)
• Jia Narigara as Young Kukki Bajaj: Samira and Bajaj's daughter (2019)
• Kunal Madhiwalla as Rahil Das: Basu Industries' manager (2019)
• Parull Chaudhry as Rakhi Basu: Mohini and Moloy's daughter; Nivedita, Anurag and Tapur's sister; Subodh's former wife; Tanisha and Kaushik's mother (2020–present)
• Vidyut Aryan as Subodh Chakraborty: Rakhi's former husband; Tanisha and Kaushik's father (2020–present)
• Urfi Javed as Tanisha Chakraborty: Rakhi and Subodh's daughter; Kaushik's sister (2020–present)
• Kunal Thakur as Kaushik Chakraborty: Rakhi and Subodh's son; Tanisha's brother (2020–present)
• Amit Raghuvanshi as Mohnish: Kaushik's friend (2020–present)
• Minal Mogam as Kajal Sharma: Mahesh's wife (2020–present)
• Aditi Sanwal as adult Kukki Bajaj: Samira and Bajaj's daughter(2020–present)
• Shivika Rishi as Young Diya Basu: Anurag and Komolika's daughter (2020–present)
• Sumaiya Khan as Young Sneha Basu: Prerna and Anurag's daughter (2020–present)
• Neelu Dogra as Rondita: Mohini's friend (2020)

• Sidharth Malhotra as Abhay Singh: To promote Jabariya Jodi (2019)
• Parineeti Chopra as Babli Yadav: To promote Jabariya Jodi (2019)
• Vikram Singh Chauhan as Aman Junaid Khan: To promote Yehh Jadu Hai Jinn Ka! (2019)
• Aditi Sharma as Roshni Ahmad: To promote Yehh Jadu Hai Jinn Ka! (2019)
• Ayushmann Khurrana as Karamveer Singh: To promote Dream Girl (2019)
• Nushrat Bharucha as Mahi Rajput: To promote Dream Girl (2019)
• Rupali Ganguly as Anupamaa: To promote Anupamaa (2020)
• Sudhanshu Pandey as Vanraj: To promote Anupamaa (2020)
• Muskan Bamne as Pakhi: To promote Anupamaa (2020)

Kasautii Zindagii Kay is a reboot of the 2001 series of the same name, which also was produced by Ekta Kapoor under Balaji Telefilms for Star Plus.[4]

In February 2018, Ekta Kapoor revealed that she was creating a rebooted version of one of her old series stating,

With a piece of my broken heart I wrote in 2001, 17 years later I reboot it dipping in personal pain and lacing it with experiences of an older me! Bringing back my most successful love saga that ran for 9 years! Again, I’ll take my broken heart & make it into art!

— Ekta Kapoor [5]

On 4 July 2018, Kapoor had a meeting with Star Plus regarding the reboot.[6] However, in 21 July 2018, she revealed Kasautii Zindagii Kay as the reboot, sharing the first teaser of the series.[7][8]

In September 2018, Shah Rukh Khan introduced Parth Samthaan and Erica Fernandes as Anurag Basu and Prerna Sharma.[9] Kapoor revealed that Anurag was named after her director friend and Prerna was named after her father's friend Prem Chopra's daughter.[10]

Parth Samthaan was cast to play Anurag Basu, while Erica Fernandes was cast to play Prerna Sharma.[11][12]

I had a few personality traits in mind for Anurag and Prerna. Anurag had to be the kind of man who doesn't scream to get noticed, but once you notice him, he's unforgettable. For me, Parth was an obvious choice because he has unbelievable eyes. I have not seen a man whose eyes reflect that depth even in photographs. Prerna is someone who comes across as light-hearted, but has a lot of depth. When I saw the promo of Erica's show, Kuch Rang Pyar Ke Aise Bhi, I knew I wanted to cast her.

— Ekta Kapoor [13]

Uday Tikekar, Shubhaavi Choksey, Kali Prasad Mukherjee, Kanupriya Pandit, Pooja Banerjee and Sahil Anand were cast to play the prominent roles of Moloy Basu, Mohini Basu, Rajesh Sharma, Veena Sharma, Nivedita Basu and Anupam Sengupta.[14] In October 2018, Hina Khan was introduced as Komolika Chaubey.[15]

In June 2019, Karan Singh Grover was introduced as Rishabh Bajaj.[16] In May 2019, Hina Khan took a break from the series for a few months.[17][18] However, in September 2019, Khan confirmed quiting the show and was replaced by Aamna Sharif as Komolika Chaubey in October 2019.[19]

Namik Paul was supposed to enter the series in April 2019 as Vikrant Sinha.[20] However, he chose the lead role in Kavach: Maha Shivratri over Kasautii.[21] Siddharth Shivpuri was then cast to play Vikrant.[22]

In January 2020, Paul finally joined the cast as Viraj Bhardwaj.[23] In March 2020, Karan Singh Grover who quit in October 2019 returned as Rishabh Bajaj.[24] Post his return, the series took an eight year leap and introduced many new additions including Parull Chaudhary as Rakhi, Kunal Thakur as Kaushik, Urfi Javed as Tanisha, Sumaiya Khan as Sneha, Minal Mogam as Kajal.[25][26][27][28][29]

In mid June 2020 before the shootings were about to resume after halt owing Covid-19 outbreak, Grover was confirmed not returning back to the series as Bajaj.[30] On 25 June 2020, Karan Patel was confirmed replacing Grover.[31]

Kasautii is mainly filmed in Mumbai but a few scenes were shot in Kolkata as the show's storyline is based in West Bengal.[32] The Switzerland track was shot in Zurich.[33] The promo of Shah Rukh Khan introducing lead characters Anurag and Prerna was shot at Mumbai's Kelve Railway Station.[34]

Kasautii was supposed to premiere on 10 September 2018, but was postponed to 25 September 2018.[35] The shoot of the series was indefinitely halted on 19 March 2020 and airing on 23 March 2020 due to Covid-19 outbreak.[36]

Shweta Kesari from India Today said, "Parth Samthaan and Erica Fernandes beautifully fit into the shoes of punctual Anurag and carefree Prerna. The grandeur and magnificence of the show will make your jaw drop. The makers have tried to retain the essence of Kolkata and Bengalis. Overall the show is a complete package of entertainment for soap viewers!"[37]

Soumya Srivastava from Hindustan Times described the show as "louder and garnish" and said, "The background score is excessive. It plays without reason and way too often. Whether the scene demands it or not, a joyful, somber or a comical tone is always there to force your brain into thinking that this is how you are supposed to feel right now."[38]

Times Now commented that, "The reboot takes you in the lives of Anurag and Prerna that were part of our every day lives and the first episode is all about nostalgia of the epic Kasautii Zindagii Kay."[39]