The first season was mostly a crime thriller-whodunit with only occasional episodes on the supernatural. After the first season, each story focused on a different aspect of paranormal activity, such as ghosts, zombies, phantoms, undead persons, possessed objects and witches and wizards.

Each story had a different star cast. Sometimes the actors/actresses who had appeared in some episodes of the series reappeared in other episodes of the series.

Season 1 (1995–2001)

Aahat was first shot in 1994 as a suspense thriller, and began broadcast on 12 October 1995, each story being split across two episodes. The season aired on Thursday nights, later shifting to every Friday nights. After about 40 episodes with the same theme, one episode with a supernatural theme was made and when audiences for the series rose sharply, it made the switch.

Cast

• Mona Ambegaonkar as Karuna (Episode 18 & Episode 19) / Anju (Episode 176 & Episode 177) / Reena (Episode 268 & Episode 269)
• Bakul Thakkar as Suraj (Episode 60)
• Deepak Deulkar as Inspector (Episode 60 & Episode 61)
• Anand Goradia as Vineet (Episode 60)
• Nikhil Dewan as Murli (Episode 60 & Episode 61)
• Reena Kapoor as Radhika / Geeta (Episode 60 & Episode 61)
• Shishir Sharma as Gautam Dev (Episode 177)
• Anant Jog as Devdhar (Episode 194 & Episode 195) / Baldev (Episode 264 & Episode 265)
• Amit Behl as Inspector Dipankar (Episode 194 & Episode 195)
• Surekha Sikri as Sudha Saniyal (Episode 264 & Episode 265)
• Ravindra Mankani as Somesh (Episode 268 & Episode 269)

Season 2 (2004–2005)

Due to the popularity of the first season, Sony TV decided to bring back the series in its second season. The second season aired on Friday nights. The episode format was same as of the first season. This time the season failed to gain TRP ratings.

Cast

• Sumukhi Pendse as Chetna (Episode 1)
• Bobby Parvez as Rishi (Episode 1)
• Deepshikha as Reena (Episode 1 & Episode 2)
• Abhay Shankar Jha as Doctor (Episode 2)
• Kabir Sadanand as Pratap (Episode 3 & Episode 4)
• Chetanya Adib as Manohar (Episode 3 & Episode 4)
• Ravee Gupta as Sonalika (Episode 3 & Episode 4)
• Rajendra Chawla as Advocate (Episode 3 & Episode 4)
• Bhairavi Raichura as Ragini (Episode 7 & Episode 8)
• Shahab Khan as Doctor (Episode 7 & Episode 8)
• Tushar Dalvi as Ragini's Father (Episode 7 & Episode 8)
• Sheela Sharma as Ragini's Mother (Episode 7 & Episode 8) / Deepa (Episode 21 & Episode 22)
• Disha Vakani as Bina (Episode 8)
• Rajiv Kumar as Rajiv (Episode 9 & Episode 10)
• Sudhanshu Pandey as Shekhar (Episode 9 & Episode 10)
• Nazneen Patel as Mohini (Episode 9 & Episode 10)
• Prithvi Zutshi as Shekhar's Father (Episode 9 & Episode 10)
• Ahmed Khan as Prakash (Episode 10)
• Vijay Bhatia as Amit's Friend (Episode 10)
• Malini Kapoor as Payal (Episode 12)
• Keerti Gaekwad Kelkar as Deepti (Episode 12)
• Manav Kaul as Manoj (Episode 12)
• Arjun Punj as Sunil (Episode 12)
• Bakul Thakkar as Inspector (Episode 12)
• Gopal Singh as Evil Spirit (Episode 12)
• Syed Zafar Ali as Garima's Husband (Episode 13)
• Jaydutt Vyas as Shopkeeper (Episode 13)
• Manish Raisinghan as Suraj (Episode 13 & Episode 14)
• Anant Jog as Alka's Father (Episode 13 & Episode 14) / Jagmohan (Episode 20)
• Rekha Rao as Alka's Mother (Episode 13 & Episode 14)
• Milind Gunaji as Shekhar (Episode 17 & Episode 18)
• Resham Tipnis as Avantika (Episode 17 & Episode 18)
• Aayam Mehta as Vinay (Episode 17)
• Manish Khanna as Guruji (Episode 18)
• Moonmoon Banerjee as Neha (Episode 19 & Episode 20)
• Deepak Dutta as Kunal (Episode 19 & Episode 20)
• Mihir Mishra as Vishesh (Episode 19 & Episode 20)
• Ajay Trehan as Girdhari (Episode 20)
• Sanjeet Bedi as Abhi (Episode 21 & Episode 22)
• Narendra Gupta as K.D. (Episode 21 & Episode 22)
• Kiran Karmarkar as Prashant (Episode 24)
• Simple Kaul as Pinky (Episode 24)
• Harsh Vashisht as Sanjay (Episode 24)
• Vicky Ahuja as Naresh (Episode 24)

Season 3 (2007)

The third season was titled as Aahat: Dahshat Ki Teesri Dastak (English: An approaching sound: The Third Coming of Horror). The season aired on Saturday nights, each story being shown in a single episode. This time too the season didn't manage to gain TRP ratings and the season was shut down soon.

Cast

• Anushka Singh as Saloni's Colleague (Episode 1) / Amrita (Episode 11) / Riya (Episode 16)
• Simple Kaul as Princess Mrinmayee (Episode 1)
• Parineeta Borthakur as Kamya (Episode 1)
• Mansi Parekh as Miilee (Episode 2)
• Jasveer Kaur as Sonia (Episode 2)
• Vikram Acharya as Varun (Episode 2)
• Tarun Khanna as Deepesh (Episode 4)
• Pradeep Kabra as Vinod (Episode 6)
• Pratap Sachdev as Ashutosh (Episode 6)
• Chhavi Mittal as Natasha (Episode 6)
• Neha Marda as Komal (Episode 6)
• Pankaj Berry as Rajeshwar (Episode 6)
• Shahab Khan as Dr. Pranay (Episode 6)
• Murli Sharma as Arihan (Episode 10) / Mihir (Episode 19)
• Vijay Bhatia as Mukul (Episode 10)
• Karishma Randhawa as Sameera (Episode 11)
• Kuldeep Dubey as Rahul (Episode 11)
• Faisal Raza Khan as Neeraj (Episode 11)
• Benika Deepak as Sonal (Episode 11)
• Sanjay Mitra as Ryan (Episode 12)
• Manini Mishra as Vikina (Episode 12)
• Snehal Sahay as Sanya (Episode 12)
• Nimisha Vakharia as Meju (Episode 12)
• Shaleen Bhanot as Mayank (Episode 13)
• Nisha Sareen as Rekha (Episode 13)
• Shashi Sharma as Caretaker (Episode 13)
• Parikshit Sahni as Avinash (Episode 13)
• Neelu Kohli as Durga (Episode 13)
• Mansi Verma as Sakshi (Episode 16)
• Siddharth Vasudev as Rudra (Episode 16)
• Prithvi Zutshi as Professor Baashik (Episode 16)
• Karishma Tanna as Laseeka (Episode 17)
• Amit Behl as Rana, the owner of haveli (Episode 17)
• Deepshikha as Maya (Episode 18)
• Adita Wahi as Kamya (Episode 18)
• Jayant Rawal as Kamya's Father (Episode 18)
• Nimai Bali as Tilips (Episode 18)
• Ram Bahadur Renu as Brijmohan (Episode 18)
• Vaishnavi Mahant as Sukanya (Episode 19)
• Mithilesh Chaturvedi as Caretaker (Episode 19)
• Raymon Singh as Vishal's Mother (Episode 20)
• Mona Vasu as Anjali (Episode 20)

Season 4 (2009–2010)

The fourth season was titled Aahat: The All New Series, which aired on every Friday and Saturday nights. In the season, Durjan, head of Paranormal And Supernatural Activities Research who used to collect powers from the spirits for his boss sends Harsh (Chaitanya Choudhury), Raghav (Vishal Gandhi) and Yamini (Krystle D'Souza) to deal with a new supernatural power every week with the story being split into two episodes. The season had three crossover episodes with the series CID. Once in November 2009, second time in February 2010 and third time in June 2010. This time the season managed to gain high TRP ratings and was declared a hit.

Season 5 (2010)

Due to the huge popularity of the fourth season, Sony TV decided to telecast the series four days. The fifth season aired on every Monday to Thursday nights. Every week, two stories were telecast, each story being split across two episodes. But due to this step, the TRP ratings dropped and the channel had to shut down the series on 25 November 2010.

To celebrate 15 years, there was a featured 16-episodes of the story "Maut Ka Khel" (English: "The Game of Death") which aired starting 20 September 2010. The story line followed twelve celebrities (Roshni Chopra, Aashka Goradia, Vivan Bhatena, Gautam Rode, Ketki Dave, Tanaaz Irani, Bakhtiyaar Irani, Aryan Vaid, Bobby Darling, Karishma Tanna, Sanjeet Bedi and Shahbaz Khan) who lived in a 200-year-old haunted house.

• Iqbal Azaad as Aakash (Episode 28)

Season 6 (2015)

The first episode of the sixth installation of the series premiered on 18 February 2015.^[2] Initially, the series was aired bi-weekly on every Monday to Tuesday nights. The first episode of the series had gained a TRP rating of 2.9. Due to high ratings, the channel decided to telecast the season four days on every Monday to Thursday nights. But after a couple of weeks, the TRP ratings dropped, and the channel had to shut down the season on 4 August 2015.^[3][8]

Season 7 (TBA)

The seventh season is currently under development.