Narayan Sanyal (26 April 1923 – 7 February 2005) was an Indian writer of modern Bengali literature as well as a civil engineer.

A Documentary on Writer Narayan Sanyal was screened on the 18th Kolkata International Film Festival on 15 November 2012 at Bangla Academy .

Sanyal wrote numerous books[3] that dealt with various topics, such as children, science, art and architecture, travels, psychiatry, technology, refugee problems, history, biographical pieces, encyclopaedia of animals, social novel and Devadasi-related.

One of the most popular sci-fiction books, Nakshatraloker Debatatma [নক্ষত্রলোকের দেবতাত্মা], is based on the transformation of human race from primitive creature to civilised intelligent species controlling the whole earth.

In his book, Sanyal named HAL as Jantra-Na, in his mother tongue Bengali, it ambiguously means 'not a machine' as well as 'pain'.

This book is based on the shadow of Brighter than a Thousand Suns: A Personal History of the Atomic Scientists (1970), by Austrian Robert Jungk.

Samaresh Basu, as the editor (also a friend of Sanyal) of Mahanagar, a magazine, published it in a Puja issue.

For this reason, some changes in the original plot and a few anachronisms (that suit, e.g. offering a chair to the accused & the witness at the courtroom in India—- which is not generally the practice) necessarily occur in his writings.

After Jodi Jantem, he changed the character Basu to be an aged lawyer, whose wife Ranu is made invalid & Suborna alias Mithu, their only daughter is died in an accident.

Mitra couple returns Kolkata, after selling the hotel and starts a private detective agency, named Sukoushali [সুকৌশলী] at Basu's residence at New Alipore.

Joydeep, Nilima's fiancé shadows another ex-employee of Jagadananda, Yu Siang, a Burmese, who is also supposed to come India to blackmail the old man.

Basu makes Prakash Sengupta, a doctor free from all charges of killing his friend, Kamalesh Mitter.

Basu finally solves the issue by tracing some clues at the cottage, that includes a pair of wool knitting sticks (in Bengali, which are called Uler Kanta).

Bikash makes an excellent plan to put the blame on a retired Mathematics teacher Shibajee Protap Chakraborty.

Miss Pamela Johnson of Merinagar, a hypothetical township near Kanchrapara, West Bengal dies at age 72.

The story begins with Anirban Dutta, an investment counselor, visiting PK Basu for a legal advice.