General · EdgepediaOctober 3, 20264 min read

Thadayam

Thadayam (தடயம், meaning "clue") is a 2026 Indian Tamil-language crime thriller web series written and directed by Navinkumar Palanivel and produced by Ajay Krishna for the streaming platform ZEE5. Starring Samuthirakani, Sshivada, and Raj Tirandasu, the six-episode series is set in 1999 and follows a police investigation into ritualistic serial killings along the Tamil Nadu–Andhra Pradesh border. It is inspired by actual events and premiered on 27 February 2026.¹^•²^•³

Key fact	Detail
Format	Six-episode Tamil ZEE5 original; episodes run from 17 to 29 minutes⁴
Release	27 February 2026, on ZEE5 (via OTTplay Premium)¹^•⁵
Setting	1999, border villages of Tamil Nadu and Andhra Pradesh; inspired by actual events¹^•²
Lead cast	Samuthirakani as SI Adhiyaman, Sshivada as Inspector Lakshmi, Raj Tirandasu as Suruli, Munnar Ramesh as DSP Gunasekaran, Sundharpandyan as DSP Rayudu¹
Languages	Tamil, Telugu, Malayalam, and Kannada audio with English subtitles¹
IMDb rating	5.4/10 from about 2,600 user ratings⁶
Milestone	Samuthirakani's first web series as an actor⁵

Spoilers

Premise and plot

The story opens with a gruesome murder in 1995, with key details withheld, and then follows a series of killings spread across the Andhra Pradesh–Tamil Nadu border between 1996 and 1999. The killers are not motivated by money: they take only the mangalsutra (sacred necklace worn by married Hindu women) and waist-chain from their victims and leave a question mark painted on the wall as a calling card.⁷

SI Adhiyamaan (Samuthirakani) is a senior officer with a sharp instinct for cracking cases who is frequently humiliated by his superiors and is on the waitlist for voluntary retirement. When a new boss, SI Lakshmi (Sshivada), arrives, the two are drawn into an investigation spanning nearly 77 murders, which forces both to confront uncomfortable truths about the system they serve.⁷ The series is structured as a whydunnit: it reveals the killers, played by Raj Tirandasu and Sundharpandyan, early, and centers its suspense on motive rather than identity.²

Episodes

The six episodes are titled The First Case (24 minutes), The Border (18 minutes), Truth Meets Devil (19 minutes), The Warning (20 minutes), Find The Devil (17 minutes), and The Conclusion (29 minutes). In the first episode, Adhiyaman, a police officer on the waitlist for VRS, investigates a theft and notices a startling pattern when a second village reports a similar incident; by the third, he and his team reach Andhra Pradesh and find murders following the same pattern.⁴^•¹

Production and release

The series was written and directed by Navinkumar Palanivel, produced by Ajay Krishna, photographed by K. K., edited by Dinesh Kumar, and scored by Vibin Baskar. ZEE5 released a trailer on 19 February 2026, about a week before the premiere.⁸^•³ Thadayam debuted on ZEE5 on 27 February 2026 and was initially available in Tamil with English subtitles, with Telugu, Malayalam, and Kannada audio versions also offered on the platform. It marked Samuthirakani's first appearance in a web series.⁵

Reception

Critical response was divided. Scroll.in called the show engrossing and "a decently rigorous police procedural," while noting that the question of why the killers avoid their most obvious target is never suitably answered, and praised Samuthirakani as believable as a veteran cop and Raj Tirandasu, known for Pushpa: The Rise, as striking in the killer role.² India Today was more critical, judging that the series relies on shock value and clichés, that the justification behind 77 murders never fully convinces, and that Lakshmi remains a second fiddle despite technically outranking Adhiyamaan, though it credited both leads with committed, grounded performances.⁷ The Times of India gave 2.0 out of 5, arguing the show "racks up over seventy murders across two states and can't produce a single interesting villain" while crediting Samuthirakani's presence.⁹ The New Indian Express, also rating it 2 out of 5, described the series as fusing a serial-killer story with a vigilante story and criticized its handling of extrajudicial killing, though it noted that the narrow lanes and porous border setting give an eerie feeling.¹⁰ The Tamil-language outlet Full On Cinema rated it 3.25 out of 5, praising the storytelling for keeping viewers guessing despite the killers being shown early.¹¹ On IMDb the series holds a 5.4/10 rating from about 2,600 users, with the first episode the highest rated at 7.5.⁶

Other uses of the title

A separate vertical microseries titled Thadayam, directed by Harish Hero and starring Pandiyarajan, was announced in December 2025 as a 60-episode series of one-minute episodes premiering on the Bullet App in partnership with ZEE5.¹²

References

Topic: Encyclopedia › Arts and culture › Screen and stage › Film and television › Series and fictional screen worlds › Unscripted, reality, and web-native series › Web-native and streaming-original series › Indian and South Asian web series

Initially written Oct 3, 2026 · Reviewed: Oct 25, 2026 · Edited: Oct 15, 2026; Oct 25, 2026; Nov 1, 2026 · Last review: Oct 25, 2026

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