Every forger leaves a mark on the paper.

The Watermark Files is a series of India-set conspiracy thrillers by Anchit Tandon. Each book is a complete case solved by Ira Sahni, a questioned-documents examiner from Delhi, who works out the truth from the paper itself: the watermark, the ink, the typewriter and the seal.

1. The Palace Writer, 2. The Stamp Vendor, 3. The Second Inventory, 4. The Devpur Deed. Every book is a complete case and can be read on its own, but reading in order lets you follow Ira and Kabir and the larger mystery that links the cases.

Ira Sahni is the lead of the series: a document examiner from Delhi who trusts paper more than people. She is called in by courts when a deed, a will or an inventory might be forged. Her partner in most cases is Kabir Anand, a reporter who lost his job for telling the truth.

Yes. The series is written as clean, fast-paced thrillers in plain English, with short chapters and no explicit content.

When this page was last checked (26 October 2026), all four Kindle editions showed as free to read with Kindle Unlimited on Amazon.in, and could also be bought outright. Book 1 was ₹99 to buy.

On Amazon: Kindle editions in every Amazon store, plus paperbacks. Use the buttons on this page for Amazon.in, or the book pages for Amazon.com links.

It shares the pleasures of a Dan Brown novel, old documents, codes, secret societies and a race against powerful people, but it is set entirely in India and solved through real forensic document methods rather than symbology.