Dual IMDb Pages for TV Show - Magpie Murders

There are two separate pages for the TV show Magpie Murders.

https://www.imdb.com/title/tt13186264/  - Magpie Murders.

https://www.imdb.com/title/tt21873000/?ref_=ttls_li_tt  - Magpie Murders On Masterpiece.

The Magpie Murders on Masterpiece is the duplicate page. Hence it should be deleted.