Dalgliesh is returning to with Bertie Carvel and Carlyss Peer reprising their roles because the title character and detective Kate Miskin.
The six-part season has been break up throughout three tales - Demise of an Knowledgeable Witness, A Sure Justice and The Homicide Room.
Within the closing story, Dalgliesh is known as to research a homicide on the Dupayne Museum, an establishment well-known for its curious exhibit of probably the most heinous crimes of the interwar years.
When the killer strikes once more, the race is on to uncover the secrets and techniques and scandals which lie behind these murders.
Kate actress Carlyss Peer spoke completely to Specific.co.uk and different press in regards to the "creepier" tone and the "emotional tolls" her character faces.
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On how Kate and Dalgliesh's relationship has progressed, she stated: "Final season Kate was clearly a little bit nervous because it was her first time working with Dalgliesh.
"First time within the Met and all that stuff. And this time you will notice her working a bit tougher, attending to work with Dalgliesh extra intently.
"Which has its emotional tolls in addition to its work implications I believe, you will notice their relationship develop and her emotions for him change."
On why they make a terrific group she stated: "I believe they work effectively collectively as a result of there are some similarities between them but in addition they're very totally different.
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"They arrive from very totally different backgrounds they usually say opposites entice in that manner.
"I believe Kate is bringing a more energizing look in a manner, as a result of Dalgliesh is so seasoned at what he does, he has a really explicit manner of doing issues.
"Kate is bringing a contemporary, 'What is that this? I am experiencing this for the primary time and what are my insights?'
"They're each clever, they each have good instincts, they each are decided to do effectively in fixing the instances and imagine very a lot that the police work they're doing is necessary and must be taken critically."
Teasing what followers can anticipate from the brand new season, she stated: "The second story, A Sure Justice, it is set in a lawyer's chambers.
"So you might be getting a demographic of people who find themselves vastly clever and vastly good which is kind of attention-grabbing as a result of Dalgliesh is clearly so clever.
"Figuring out a criminal offense with people who find themselves sort of his equals is kind of dramatic, it feels a lot darker and grittier by way of the sort of panorama you see.
"Then the final story, The Homicide Room, it zones in once more the place you're going into this location the place the precise homicide itself is kind of intense. It is darkish, it is a little bit bit creepy if I am sincere."
Dalgliesh airs on Channel 5 from April 27 at 9pm