999: Killer On The Line (2016)
- HD 1080
- Runtime: 45m.
- Status: Ended
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- Languages: en
- Seasons: 2
- Episodes: 16
- First air date: 2016-04-18
- Last air date: 2018-08-27
- providers: Amazon Prime Video, Amazon Prime Video with Ads
- The 999: Killer On The Line is featured in the top rankings of 2016
- #10 in Top Crime Series of 2016
- #43 in Top Documentary Series of 2016
This series looks at murders that were callously planned and premeditated, with the emergency calls originating from the killer themselves.