The Oscar winner stars in a true-crime tale of a mild-mannered English couple accused of murder and their attempts to evade justice.
Colman dazzled in black cloat with feathered sleeves paired with long jewelled earrings as she turned up to Southbank Centre for the premiere on Tuesday night.
Colman and Thewlis play Susan and Christopher Edwards, English spouses living a quiet and wholly unremarkable life until the day in 1998 when she shot and killed her parents, Patricia and William Wycherley, and he helped her bury the bodies in his in-laws’ back garden.
For years, the couple maintained the fiction of the Wycherleys still being alive so they could collect their pensions. The miniseries is written by Colman’s husband Ed Sinclair her “biggest fan” she told The Guardian.
Director Will Sharpe told The Radio Times: “The premise of Landscapers is that Susan and Chris Edwards were accused of the double murder of Susan’s parents, and then of burying them in the parents’ backyard in Mansfield.
“It’s their love story, and along the way we explore various versions of the truth as it may or may not have been presented by different characters.”
Speaking about her character, Colman explains: “What’s fascinated me most about playing the character Susan is her fantasy world. I love the way we see her fantasy and that’s been really fun having someone with such a vivid imagination.
“Susan has quite clear influences in what she considers to be romantic and she loves black and white films and romantic films, she loves westerns, damsels in distress and a heroic man. Chris is her knight in shining armour, her Gary Cooper, her cowboy. She just wanted to be rescued I think.”