CID is an Indian detective television anthology series about India's Crime Investigation Department, created by B. P. Singh for Sony Entertainment Television India and Sony Entertainment Television Asia. The series stars Shivaji Satam as ACP, Aditya Srivastava and Dayanand Shetty as Senior Inspectors. The location of the series is set in Mumbai, India. Following a pilot episode on 29 April 1997, the series premiered on 21 January 1998 and is the longest running television series in India, having completed nineteen years in 2016. The show airs two days a week, Saturday and Sunday nights. The series aired its 1000th episode on Friday, 27 September 2013.