Tonight's episode of Holby City will take a dark turn as Isaac's reign of terror leaves a life hanging in the balance.
A couple of weeks ago, Dom's abusive ex-boyfriend Isaac Mayfield returned to the hospital after his time in prison.
With Isaac's father in the hospital, Isaac has spent time trying to manipulate Dom, however, last week Dom put Isaac in his place.
In tonight's episode (Tuesday June 11) Dom will get another shock when Isaac returns to Holby City to say his final goodbyes to his father, who passed away recently.
Dom is confident he's got rid of Isaac and his evil ex wouldn't be bothering him again.
However, Isaac wastes no time turning his attentions to Dom's husband Lofty.
After Lofty cheated on Dom, the pair have obviously not been on the best of terms, which Isaac is aware of.
As the situation begins to escalate, Lofty is horrified when he realises the extent of Isaac's manipulation and the lengths he'll go to.
Lofty soon realises he is out of his depth with Isaac and soon things take a horrifying turn...
A shock incident then leaves one person fighting for their life.
The Holby team fight to save the character's life and further truths about Isaac surface.
Is this the end of him once and for all? Or is it the end of someon else?
Holby City airs on Tuesday at 8pm on BBC One.
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