General · EdgepediaOctober 3, 20265 min read

Melody of Secrets (ความลับในบทเพลงที่บรรเลงไม่รู้จบ)

Melody of Secrets (ความลับในบทเพลงที่บรรเลงไม่รู้จบ, also translated as Secrets in a Neverending Melody) is a 2025 Thai Boys' Love mystery thriller series produced by GMMTV, adapted from the novel of the same name by Baengpan Homchan (แบ่งปัณณ์ หอมจันทร์)¹. It stars the screen pairing Force Jiratchapong Srisang and Book Kasidet Plookphol as a criminologist and an amnesiac crime journalist whose shared past conceals a murder mystery². The series ran for ten episodes from 5 December 2025 to 13 February 2026¹.

Key fact	Detail
Original title	ความลับในบทเพลงที่บรรเลงไม่รู้จบ (Khwam Lap Nai Botphleng Thi Banleng Mai Ru Jop)¹
Broadcast	10 episodes, 45 minutes each, 5 December 2025 to 13 February 2026, Fridays 20:30 on ONE31 with Viu reruns at 22:30¹^•²
Source	Adapted from the novel ความลับในบทเพลงที่บรรเลงไม่รู้จบ by Baengpan Homchan¹
Lead cast	Force Jiratchapong Srisang as Tankhun; Book Kasidet Plookphol as Botphleng²
Production	GMMTV, with Snap25 listed as production company; directed by Tle Tawan Charuchinda and Arisa Wawwanjit¹^•³
Reception	IMDb rating 7.2/10 from 270 votes⁴
Soundtrack	"โลกสีเทา (Dark and Light)" by Book Kasidet and "ความรักในบทเพลงที่บรรเลงไม่รู้จบ (Endless Love Song)" by Force Jiratchapong²

Spoilers

Premise

The story follows Botphleng (บทเพลง), a crime journalist who lost his memory in an accident ten years earlier²^•⁵. He receives a mysterious diary recording that he once had a lover named Tankhun (แทนคุณ)². When the two meet, Tankhun, a criminologist, claims to be that forgotten first love, but Botphleng immediately senses that this man is not the Tankhun written in the diary²^•⁶.

Using a murder that occurred on the day he met Tankhun as his way in, Botphleng draws close to the criminologist to investigate the truth². The case turns out to be a serial killing more frightening than expected, and Botphleng's grandmother forbids him from touching it, but he refuses because he needs the case as a bridge to find out who the real Tankhun is⁶. As the investigation proceeds, the relationship between the two men changes from mutual suspicion into something neither planned².

Cast and characters

Force Jiratchapong Srisang plays Tankhun, the mysterious criminologist who insists he is Botphleng's first love². Book Kasidet Plookphol plays Botphleng, the journalist whose fragmented memory drives the plot². The supporting cast includes Jan Ployshompoo Supasap as Lieutenant Dao, Boun Noppanut Guntachai as Muenmile, Ployphach Phatchatorn Tanawat as Jennaree, Kate Thiyada Phanbua as Keetakarn, Pu Piyamas Monayakul as Kessara, Tle Tawan Charujinda as Tanu, and Jamie Juthapich Indrajundra as Nim²^•⁴. Junior Panachai Sriariyarungruang appears as Thunphob, a figure from the past whose death connects the two leads⁴^•⁷.

Story resolution

The finale reveals the identity deception at the heart of the story. The man living as Botphleng is in fact Tonthorn (ต้นธาร), whose memories were erased and who was hypnotized so that he would not remember his past or his real identity; the real Botpleng had died, and his mother Keetakarn forced Tonthorn to assume her son's identity⁸. Tankhun, for his part, was adopted by Thunpob's family as a bone marrow donor and had always lived on their terms⁸. In the closing episode, Tonthorn, who had spent his life atoning to the dead Botphleng and Thunphob by building the homestay they had dreamed of, is released from that guilt by Keetakarn and returns to Tankhun⁹.

Production

The series was announced as part of GMMTV's 2025 lineup and produced by GMMTV with Snap25 as the production company¹^•³. Direction was shared by Tle Tawan Charuchinda and Arisa Wawwanjit, with screenplays by Bibi Phoutida Nosavan and Kusolin Mekviphat¹. Letterboxd credits Ratthakit Kittiratthanaphokin as cinematographer and lists Sataporn Panichraksapong and Darapa Choeysanguan as executive producers¹⁰.

The visual tone drew comment before broadcast. The pilot trailer used a darker, more muted palette, while the official trailer released on 20 November 2025 was noticeably brighter and more colorful; Thai readers of the original novel suggested the bright aesthetic was a deliberate decoy to make it harder to guess what was real¹¹.

Reception

Audience response was strong at launch. GMMTV reported that the official trailer accumulated more than 2.7 million views across online platforms within 24 hours, that episode 1 generated over 1.25 million trend posts and episode 2 over 1.1 million, and that related posts reached first place in worldwide trends on X¹². On IMDb the series holds a 7.2/10 rating from 270 votes⁴.

Reviewers highlighted the balance between mystery and romance. The BL Xpress praised the tight storytelling and even pacing, and singled out Jan Ployshompoo's performance as the antagonist Dao, who kills her own father on a wrong assumption and refuses to accept the reality afterward; the review rated the series 3.5 out of 5⁸. A Thai review noted the opening structure, which begins with Botphleng talking to a doctor before cutting back seven days, as an example of the storytelling that keeps viewers questioning throughout¹³.

Soundtrack

Two theme songs were released for the series. Book Kasidet performed "โลกสีเทา (Dark and Light)", released 5 December 2025, and Force Jiratchapong performed "ความรักในบทเพลงที่บรรเลงไม่รู้จบ (Endless Love Song)", released 19 December 2025¹⁴. Both were made available on Spotify, YouTube, and Apple Music¹⁴.

Availability

The series aired on the ONE31 channel in Thailand, with reruns on Viu at 22:30². Full episodes with English subtitles were also uploaded to the GMMTV YouTube channel, and all ten episodes remained available on Viu after the finale²^•¹⁵.

References

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