Marnie Julie Nightingale (Née Maxwell-Brown), portrayed by Lysette Anthony, is the mother of James, Nathan Nightingale and Ellie Nightingale. She is the wife of Mac Nightingale. She made her first appearance on 1 February 2016.
It has been said that Marnie will waste no time in causing "chaos for Mac" and has been billed as "a complex, intriguing and hilarious matriarch with a big broken heart" and that she can start a fight in an empty room.
Marnie arrives in the village to help her son, James, take down Mac for events that happened in the past by using Cindy Cunningham against him, however she is unaware that Cindy is Alfie Nightingale's biological mother and the reason for her divorce from Mac.
Buying The Hutch
Marnie and James decide they should purchase The Hutch. Marnie asks Diane O'Connor to purchase the restaurant, which Diane declines. Marnie then sets off the fire alarm, and makes James steal the accounts laptop. Marnie and James figure see that The Hutch is in deep debt. When returning the laptop, Scott Drinkwell catches them, and Marnie forces James to go out with Scott so he doesn't say anything.
Getting back with Mac
Mac arrives at Marnie's house and ends up kissing her. Mac and Marnie end up sleeping together, James Nightingale walks In. Mac and Neeta Kaur end each other's relationship. Later, Mac is pushed out of a window by Ellie Nightingale.
- Lysette Anthony also portrayed Louise Summers's mother Yvonne Summers from December 2008 to May 2009.
- 2016: Marnie stand with one of her hats and looks at the camera deviously.
- 2016-: Marnie and James stand in The Dog, Marnie throws her gloves at the screen.