Death Valley / BBC

“Death Valley” BBC Studios

Another lighter procedural, a murder-mystery comedy featuring the investigating odd couple of Timothy Spall as a retired star of a legendary detective show and Gwyneth Keyworth (“Black Mirror”), who plays a Welsh detective sergeant. Each week they solve murders against what are described as stunning Welsh locations. Written by Paul Doolan (“Mammoth”), this six-part caper is made by BBC Studios Comedy Prods. for BBC Two and is potentially catnip for more mature audiences.