E1
Who killed the girl?
Where to watch
Not streaming yet
Coming soon
No streaming availability found for Triangle anywhere yet.
Seasons & Episodes
E2
Letter from the past
E3
The suspect
E4
Shocking confession
E5
The obliterated truth
E6
The remorseful killer
E7
Shanghai night, the bond that tears
E8
Alibi
E9
The other side of truth
E10
Those who bear the cross
E11
Final
Cast
More from Goro Inagaki · Lead actor
SMAP×SMAP
1996 · 8.5
Yonimo Kimyou na Monogatari Tokubetsuhen
1990 · 9.5
HANA-KIMI
2007 · 7.4
Seishun kazoku
1989
Yu Yu Hakusho
2023 · 7.5
Take Five: Should we Steal for Love?
2013 · 7.0
稲垣吾郎の金田一耕助シリーズ
2004 · 9.0
13 Assassins
2010 · 7.3
Honto ni Atta Kowai Hanashi
2004 · 7.0
School Lawyer: Finding the Colors of the Stars
2025 · 7.0
See all fromGoro Inagaki
More from Yosuke Eguchi · Co-star actor
Yonimo Kimyou na Monogatari Tokubetsuhen
1990 · 9.5
Emergency Room 24 Hours
1999 · 7.4
Furuhata Ninzaburo
1994 · 8.8
Cold Case: Door of Truth
2016 · 8.2
House of Ninjas
2024 · 7.2
Strategist KANBE
2014 · 9.4
BG: Personal Bodyguard
2018 · 7.1
Shinsengumi!
2004 · 8.1
The Great White Tower
2003 · 9.1
Rurouni Kenshin: The Final
2021 · 7.7
See all fromYosuke Eguchi
More like this
Galileo
2007 · 8.2
Burn the House Down
2023 · 7.2
The Files of Young Kindaichi
2022 · 6.8
AIBOU: Tokyo Detective Duo
2002 · 7.5
Kindaichi Case Files
1997 · 8.1
Furuhata Ninzaburo
1994 · 8.8
Doctor-X: Surgeon Michiko Daimon
2012 · 7.5
The Apothecary Diaries
2023 · 8.6
Classroom of the Elite
2017 · 8.4
Monster
2004 · 8.5
Monogatari
2009 · 8.1
Black Butler
2008 · 7.8
Triangle — streaming FAQ
Which OTT platform streams Triangle?
Triangle isn't streaming anywhere in United States yet.
Is Triangle on Netflix?
No, Triangle is not on Netflix in United States as of October 2026.
Is Triangle on Amazon Prime Video?
No, Triangle isn't on Amazon Prime Video in United States right now.
Where can I watch Triangle for free?
Triangle isn't streaming in United States yet, so there's no way to watch it free at the moment.
How many seasons are in Triangle?
Triangle has 1 season in total (11 episodes). The series concluded in 2009.
Are all episodes of Triangle out yet?
Yes — all 11 episodes across 1 season of Triangle are out and available to stream.
Is there a Season 2 of Triangle?
No — Triangle ended after 1 season, so there is no Season 2.
