Abi Morgan to pen new BBC cop drama
Emmy award-winner Abi Morgan will write a new six-part drama for BBC One.
River follows John River, "a brilliant police officer whose genius and fault-line is the fragility of his mind".
Morgan said: "River is a fractured mind navigating a brutal world. And he does it wearing a police badge.
Filming is due to start next year.
Morgan won an Emmy on Sunday night for series two of newsroom drama The Hour, which was axed by BBC Two in February.
Ben Stephenson, controller of BBC Drama Commissioning, said: "It was amazing to see Abi winning the Emmy in LA on Sunday night - it shows what a world-class talent she is.
"I am delighted that she will now be turning her attention to her first series for BBC One. It's a corker with all Abi's unique qualities - smart, moving, warm and full of huge surprises."
Morgan's past work includes the Bafta-winning Sex Traffic for Channel 4 in 2004 and an adaptation of Sebastian Faulks' novel Birdsong.
She also wrote The Iron Lady, which starred Meryl Streep in an Oscar-winning role as former British prime minister Margaret Thatcher.
The Hour, which starred Dominic West, Romola Garai and Ben Whishaw was set in a BBC newsroom during the 1956 Suez Crisis.
It was given a second series but was dropped by BBC Two after falling ratings.
River was commissioned by Charlotte Moore, controller of BBC One, who said: "Abi's one of Britain's most distinctive and original storytellers and her ability to push the boundaries of the genre in surprising ways makes River her perfect debut on BBC One."
It is due to be screened in 2015.