Watch the First Trailer for the New Stephen King TV Series 'Mr. Mercedes'

Despite having released many promotional photos and behind-the-scenes featurettes, much of the details about the upcoming TV series based on Stephen King's Mr. Mercedes have been relatively unknown. Debuting on AT&T's Audience Network on August 9, the series has finally gotten its first official trailer, which you can view above.

In a short teaser that was previously released for the series, a former detective (Brendan Gleeson) investigates a mysterious tennis ball he finds in his yard with a slyly grinning face on it, as he looks around for the culprit. Clearly, someone is out to make the detective's life a living hell through a series of bizarre clues that will torment him.

UP NEXT: See The First Footage From Stephen King's 'Mr. Mercedes' TV Series

In the featurette to promote the show, executive producer/director Jack Bender explained, "I wanted a show that was haunting and beautiful, without being style over substance, because the substance of this show are the characters."

The director added, "It's Stephen King writing about the monsters inside the people. it gets pretty dark and out there."

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Another TV series based on a Stephen King story, The Mist, is currently airing on Spike, making this one of the most exciting years to be a Stephen King fan.

In addition to the plethora of series debuting that are inspired by King source material, audiences will also get to see the theatrical adaptation The Dark Tower in August and It in September. For Netflix fans, Oculus filmmaker Mike Flanagan has also shot the adaptation Gerald's Game, which is expected to hit the streaming service sometime this year.

Based on Stephen King's 2014 book, Mr. Mercedes follows demented killer Brady Hartsfield, who taunts a retired police detective Bill Hodges with a series of lurid letters and emails, forcing the ex-cop to undertake a private, and potentially felonious, crusade to bring the killer to justice before he is able to strike again.

Brendan Gleeson leads as Detective Bill Hodges, along with Harry Treadaway (Penny Dreadful) as Brady Hartsfield. Jharrel Jerome (Moonlight) is cast as Jerome Robinson, Scott Lawrence (Avatar) as Detective Peter Dixon, Robert Stanton (Mercury Rising) as Anthony "Robi" Frobisher, and Ann Cusack (Nightcrawler) as Olivia Trelawney, with Mary Louise-Parker (Weeds) as Janey Patterson, and Holland Taylor (The Truman Show) as Ida Silver. Kelly Lynch (Deborah Hartsfield), Justine Lupe (Holly Gibney) and Breeda Wool (Lou Linklatter) also star.

Mr. Mercedes will premiere August 9 on AT&T's Audience Network, available through DirecTV.