Coming to Acorn TV July 27: Chasing Shadows, an acclaimed British drama starring Reece Shearsmith and Alex Kingston.

For DS Sean Stone (Reece Shearsmith, The Widower), the razor-sharp ability to get inside the minds of serial killers is both a blessing and a curse. In Chasing Shadows, a dark, sophisticated four-part series, Stone’s brilliant detective work is hindered only by his autism, giving him a severe personality that rubs his colleagues the wrong way. Following a disastrous workplace blunder, he’s demoted to the Missing Persons Bureau, where he’s forced team up with his polar opposite, the naturally warm, empathetic analyst Ruth Hattersley (Alex Kingston, ER, Doctor Who).

The two clash, but almost immediately Stone applies his genius to the bureau’s database and sees patterns of serial killers in its cases, particularly with a lonely teenage girl who posts in a suicide message board and a lawyer with a secret psychiatric past. DS Sean Stone needs to find a solution after ruing a police press conference, however, would he be able to get in the way of finding a missing teenager who frequents a pro-suicide message board?

To find them, and to harness the power of Hattersley’s own talents, he’ll have to reckon with his own personality flaws before they prematurely end his career.

Stone will be focusing always in a different case; however it won’t be always as easy as it looks like. Several twists will interrupt Stone’s investigations, would he be able to deal with them and resolve the unknown facts?

Stone may know how to solve crimes that perplex even his new colleague Ruth Hattersley, but what she doesn’t know is that he is “as close to an actual psycho as you can get.” Chasing Shadows premieres Monday, July 27 on Acorn TV, with a new episode added every Monday through August 17.