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Petrichor The Series (หยดฝนกลิ่นสนิม)

Petrichor The Series (หยดฝนกลิ่นสนิม) is a 2024 Thai crime-mystery romance television series, an iQIYI Original produced by Miss Grand International Public Company Limited with iQIYI and made by TV Thunder Public Company Limited, adapted from the web novel Petrichor — Rust in the Rain by the author duo SixTeenSeven.1 • 2 • 3 It stars Engfa Waraha as Inspector Tul and Charlotte Austin as the forensic doctor Cherran, and it aired on Channel One 31 with an extended UNCUT version on iQIYI.1

Key factDetail
Native titleหยดฝนกลิ่นสนิม, literally raindrops with a rust smell, matching the novel Petrichor — Rust in the Rain2 • 3
ProductioniQIYI Original; produced by Miss Grand International PCL with iQIYI; made by TV Thunder PCL1
AdaptationBased on the web novel by SixTeenSeven (DobbyMANU7 and hitokage); screenwriter Sammon3 • 4
DirectorsPongsatorn Thongjaroen and Pannares Ruchirananta5 • 2
Broadcast11 episodes, November 23, 2024 to February 1, 2025, Saturdays 21:00 on One 31; UNCUT at 22:00 on iQIYI5 • 2 • 3
LeadsEngfa Waraha as Inspector Tul; Charlotte Austin as Cherran ("Ran")1 • 3
ReceptionMyDramaList 8.3/10 from 3,153 users (broadcast cut); 8.2 from 1,225 users (UNCUT)3 • 6

Spoilers

Plot and premise

The story pairs a police investigation with a developing relationship between two women. Inspector Tul, newly transferred to the Special Investigation Unit, works with the forensic doctor Cherran on a murder whose method resembles the work of a serial killer active 18 years earlier, a killer who was recently released from prison and whose return spreads fear through the capital.2 The central question the series poses is whether the new killing is the work of the "Raindrop Killer" (ฆาตกรหยดฝน) or a copycat.5

The premiere episode, titled "A Rainy Night, A Murder, and A Fateful Encounter" (การพบกันและการฆาตกรรมในคืนวันฝนตก), opens with the death of a billionaire's son found lifeless inside his luxury car, and sets the two leads against each other over the case before their investigation draws them together.1 • 7 Tul and Cherran have differing work styles that create tension before they learn to trust each other.3

Cast and characters

Engfa Waraha plays Inspector Tul, a fearless and determined police officer newly assigned to the Special Investigation Unit; Thai press framed the role as a major transformation for her.1 • 7 Charlotte Austin plays Cherran Trakulwipatkul, called "Ran", a forensic physician.3 The supporting cast includes Lin Malin Sae-lim as "May" Methini Suwitthaya, Rina Chatamonchai, and Naphat Vikairungroj.2 • 3

Broadcast and episodes

The series ran for 11 episodes from November 23, 2024 to February 1, 2025.5 • 3 It aired every Saturday at 21:00 on Channel One 31, with the 18+ UNCUT version, with longer episodes of about 1 hour 10 minutes against the broadcast cut's 45 minutes, available exclusively at 22:00 on the iQIYI app and iQ.com.2 • 3 • 6 The broadcaster One31, part of The One Enterprise PCL, hosts the full back catalog on its official site.8

Production

The series is an adaptation of the web novel Petrichor — Rust in the Rain (petrichor — หยดฝนกลิ่นสนิม) by SixTeenSeven, an author duo of DobbyMANU7 and hitokage.3 Letterboxd credits SixTeenSeven as original writer and Sammon as writer, with studios iQIYI Pictures and TV Thunder.4 Direction was shared by Pongsatorn Thongjaroen and Pannares Ruchirananta.5 • 2 International alternative titles include the Chinese 鐵鏽味的雨滴/铁锈味的雨滴, the romanization Yod Fon Klin Sanim, and the Vietnamese Petrichor: Giọt Mưa Mang Mùi Rỉ Sét.4

Reception

On MyDramaList the broadcast version holds a score of 8.3/10 from 3,153 users with 8,573 watchers, and the UNCUT version scores 8.2 from 1,225 users.3 • 6 A viewer review on Letterboxd describes it as possibly the first Thai GL series in the crime thriller genre and praises the episode 9 love scene, comparing it favorably to Affair.4

Genre placement

iQIYI categorizes the series under Thailand, Crime, Mystery, BL&GL, Romance, Drama, and Police & Criminal.5 The series uses a dual-release model, a broadcast cut on linear television and a longer 18+ streaming version on iQIYI.2 • 6

Promotion

Thai press covered the premiere as a role transformation for Engfa Waraha in the image of a tough female police inspector.7 Marketing leaned on the leads' romance milestones: the "First Kiss" in Episode 4 was promoted in advance, leading into a special Episode 5 scene.9 On December 21, 2024, a fan and media screening of Episode 5 was held at Siam Pavalai Cinema on the sixth floor of Siam Paragon, with cast appearances and live duet performances by Engfa and Charlotte.9

References

  1. "อิงฟ้า-ชาล็อต" ขอพลิกบทบาทสุดท้าทาย, MGI Public Company Limited press release
  2. เรื่องย่อซีรีส์ "หยดฝนกลิ่นสนิม - Petrichor The Series", MGR Online
  3. Petrichor (2024), MyDramaList
  4. Petrichor (2024), Letterboxd
  5. Petrichor (2024), iQIYI
  6. Petrichor: Uncut (2024), MyDramaList
  7. 'อิงฟ้า-ชาล็อต'ขอพลิกบทบาทสุดท้าทาย... ซีรีส์'หยดฝนกลิ่นสนิม', Naew Na
  8. ดูย้อนหลัง ซีรีย์หยดฝนกลิ่นสนิม Petrichor The Series, One31
  9. MGI press invitation for Petrichor EP.5, MGI Public Company Limited

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

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