The 40-year-old actress has enjoyed a long television career, getting her first breakthrough role in Coronation Street in 2000.
But what character did she play in Corrie, how long was she on it and how did she leave? We have the answers to your burning questions.
Who did Suranne Jones play in Coronation Street?
Karen was introduced to the show as Karen Phillips, a friend of Linda Sykes (Jacqueline Pirie), who was taken on at Underworld as a new machinist – and who quickly proved popular with the men of Weatherfield.
In true Corrie style, Karen had flings with Vikram Desai and Peter Barlow before finally settling down with Steve.
Their marriage stemmed from a £10 bet from Janice Battersby who said Karen would never get married.
Determined to prove her wrong, Karen asked Steve to propose to her in front of everyone at the Rovers.
The pair had a tempestuous engagement but eventually set a date for their wedding – however a major spanner was thrown into the works after it became apparent that Tracy Barlow (Kate Ford) was pregnant with Steves baby, following a one-night stand when he and Karen had been apart.
Tracy attempted to sabotage the wedding by cancelling the flowers and venue but Steve found out and managed to book another venue.
However the wedding ended in chaos when Tracy announced that Steve was her baby Amys dad – leading to Karen getting her own back by going to baby Amys christening and brawling with Tracy in the church.
When did Suranne Jones character leave Coronation Street?
The character was last seen in Weatherfield on Boxing Day 2004, after Steve ended their marriage and asked her to leave.
Karen was written out of the show after Jones decided she wanted to move on.
I just thought, while shes brilliant and Im enjoying her, Ive got to get out, she explained. I was living and breathing Karen McDonald.
In a dramatic showdown, her onscreen character of Karen led Tracey Barlow and Steve to believe their daughter Amy was dead despite her actually being with Roy.
Tracey then tried to kill Karen leading to a dramatic fight between the pair.
Steve ended their marriage over this and Karen left Weatherfield.