The franchise began with , which premiered on Star Plus on 27 July 2001 and ran for 154 episodes. The second season, Ssshhhh...Phir Koi Hai , shifted to Star One and aired from 3 November 2006 to 22 August 2009, spanning 221 episodes. A short third season concluded the series on 16 May 2010. In total, the series had 393 episodes across 3 seasons .
The show successfully adapted Western monster tropes into Indian settings, creating highly memorable multi-part thrillers.