Thanks to a partnership with Screen Yorkshire, the BBC One production was shot mostly in Bradford, Leeds, Wakefield and Ripon, and the shoot was based at Studio 81 on Kirkstall Road. Doncaster is featured in the novel as the scene of one of the grisly railway murders, but as the town's current station is too modern, a preserved heritage railway had to stand in for it.
The Grade II-listed Victorian music hall is one of the best preserved examples of a 19th-century entertainment venue in the country. It opened in 1865 and underwent a major refurbishment in 2009.
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The Grade I-listed civic hall was opened by Queen Victoria and is one of the city's foremost buildings. It used to house the law courts.
The Grade II-listed former Leeds and County Liberal Club was built in 1891 and features stunning stained glass windows. It's now a four-star hotel with 44 rooms.
The city's historic shopping arcades were built in 1898 and 1904, and are now part of Victoria Quarter.
The Grade I-listed hall, built in 1873, was used as the location for the Scotland Yard police headquarters in London. Churchill famously gave a speech outside City Hall during World War Two.
The cathedral city's public swimming baths began life as a spa in 1905. The main pool was added in 1936 and is still operational today.
This preserved heritage railway was once part of the Skipton to Ilkley line, which closed in 1965, and re-opened as a tourist line in 1981. It has four miles of track.
The city's Georgian quarter - known for its period townhouses - features in the drama.
An historic area of Bradford which developed in the mid-19th century, when German Jewish merchants arrived in the city and built warehouses in an ornate neoclassical style.
The UNESCO World Heritage Site near Bradford regularly appears in period dramas because of its incredibly well-preserved Victorian mill.
The preserved steam railway is another regular location to appear on our screens.
The Georgian manor house near Ripon is the home of the Compton family and is open to the public. It appeared as Hundreds Hall in the film The Little Stranger.
The Grade I-listed gothic house near Harrogate has appeared on screen before, featuring in The Secret Garden, Utopia, Lost in Austen and Victoria.