Devlin grew up in County Tyrone; her father was an engineer, and her mother was an art teacher.
She received offers to study Psychology at university, but turned them down to pursue drama instead.
She took a foundation course at the Lir Academy in Dublin[1] and went on to graduate from the Royal Welsh College of Music & Drama in 2021.
[4][5] In 2023 Devlin plays Constable Annie Conlon, a rookie police officer in the Belfast-set BBC One series Blue Lights.
[6][7] Devlin has spoken about the series displaying the intricate nature of the history and politics of Northern Ireland to a wider audience.