TV show availability guide
Key Witness
A bond is formed between a doctor who cannot save lives, a policewoman who cannot catch criminals and an assassin who cannot kill, but can they solve crimes? Failing to protect a key witness to an international drug smuggling case, Interpol Officer Xu Guo Ying (Denise Camillia Tan) resigned as a result. She meets funeral planner Wang Yu Xuan (Sheryl Ang) and arcade staff Chen Zhi Ming (Desmond Tan), together the trio form a team that specializes in the search for key witnesses in unsolved cases. They soon forged a strong friendship but each is not what they appear to be. As their past catches up with them, it threatens to destroy them. A doctor who cannot save lives, a policewoman who cannot catch criminals, and an assassin who cannot kill, how will their lives unfold? Can they leave their past behind and persevere in seeking the truth?
2021 1 season · 21 episodes Ended
- Drama
- Crime
Viewing market
Country-level availability
Where to watch in United States
4 platforms currently listed across all viewing options
Data checked 26 Oct 2026, 20:46 UTC
Free with ads
4Streaming providerThe Roku ChannelNo linked platform guide yetDetails unavailable Streaming providerPlexNo linked platform guide yetDetails unavailable Streaming providerPlex ChannelNo linked platform guide yetDetails unavailable Linked platform guideTubi TVRelated brand guideView details
Series schedule
Seasons and episode dates
A concise series timeline, including the latest aired episode and the next date currently listed.
- First aired
- Seasons
- 1
- Episodes
- 21
- Status
- Ended
Latest aired episode
S1 E21
Episode 21
Aired
Next listed episode
No upcoming episode date is currently listed.
Season guide
Most recent seasons first
Season 1
21 episodes
First episode aired
About these dates: Air dates describe the series schedule and may change. They do not confirm that an episode is available on the same date from the providers listed above.
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