Eagle eyed viewers have spotted something wrong with BBC’s latest drama Four Lives.
The 'Grindr Killer' series, available on the iPlayer, is supposed to be set in London and Hull.
But those paying attention to their screens in Salford spotted some more familiar scenery than they were expecting.
Residents recognised several local landmarks posing as Hull - including Swinton Shopping Centre, Wyndham Avenue, Clifton Street, St. Peter’s Church and more.
Set across Hull and Barking, Four Lives tells the true story about the four men killed by Grindr murderer Stephen Port played by Stephen Merchant.
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Stephen Port received a life sentence with a whole-life order in November 2016.
An inquest into the four deaths concluded last week, with the jury ruling that failings by the Met Police contributed to the deaths of Port's final three victims.

The show explores the murders of Anthony Walgate, Gabriel Kovari, Daniel Whitworth and Jack Taylor, and their families and friends who worked tirelessly to find out what happened to them.
The bodies of three of the four murder victims were found at the graveyard of a church in Barking.
The three-part series began at 9pm on Monday (January 3) on BBC One, and will continue at the same time on Tuesday (January 4) and Wednesday (January 5).
All three episodes are currently available on BBC iPlayer.
Written by Neil McKay and based on extensive research and multiple sources, Four Lives’ cast includes Stephen Merchant, Sheridan Smith, Jaime Winstone, Samuel Barnett, Rufus Jones, Robert Emms, Daniel Ryan, Stephanie Hyam and Leanne Best.