"Killing's a small thing," Jamie Dornan whispers in the trailer for BBC's period drama "Death and Nightingales."

"Getting away with it — that's not easy."

The three-part miniseries stars Dornan as a mysterious outsider named Liam who may be responsible for bombings in London. He winds up living on a farm owned by Billy (Matthew Rhys), a harsh man who mistreats his stepdaughter Beth (Ann Skelly). After decades of pain and betrayal, Beth decides to take control of her destiny with Liam's help — leading to a devastating climax.

The miniseries is based on Eugene McCable’s modern Irish classic and was adapted by "The Fall" creator Allan Cubitt (reuniting him with Dornan).

Rhys is coming off winning an Emmy for "The Americans." Dornan has previously starred in "The Fall" and the "Fifty Shades of Grey" franchise.

"Death and Nightingales" premieres later this month.