New Delhi, Oct. 11 -- Prime Video has officially cancelled two of its recent drama series, 'Countdown' and 'Butterfly', choosing not to move forward with second seasons despite both titles performing solidly in their debut runs.

The decision, confirmed this week, brings an end to two shows - Countdown and Butterfly - produced under Amazon MGM Studios, which had launched earlier this year to favourable viewer reception.

'Countdown', led by 'Supernatural star' Jensen Ackles, and 'Butterfly', featuring 'Lost' and 'Hawaii Five-0' actor Daniel Dae Kim, were among Prime Video's notable original offerings of the late spring and summer slate.

Both series managed to secure spots in the Nielsen Top 10 rankings for streaming originals - 'Countdow...