EastEnders' Ronnie Branning will be "made to pay" for swapping her dead baby with Kat Moon's newborn.
The grief-stricken new mum - played by Samantha Womack, who has since announced her decision to leave the BBC One soap - eventually comes clean about her shocking actions, which saw her pass off baby Tommy as her own in the wake of her son James' tragic cot death.
However, while Kat (Jessie Wallace) will initially be elated to have her child back in her arms, her happiness will soon turn to anger.
An insider explained: "There's no doubt that when Kat moves past her elation at getting Tommy back, she'll want Ronnie to pay. It's very likely that her first port of call would be to the police. Ronnie has committed a serious crime."
After soap bosses were forced to bring the harrowing storyline to an early end when the BBC was flooded with complaints about the nature of the plot, viewers will see Ronnie face even more heartache when her husband Jack (Scott Maslen) finds the shocking revelations too much to deal with.
The 'EastEnders' source added to Inside Soap magazine: "However much Jack loves Ronnie, this will be almost too much to bear. It'll be interested to see if Ronnie is treated with compassion by her family and friends.
"She has clearly not been in her right mind since the tragedy on New Year's Eve (31.12.10). Ronnie's a woman battling serious psychological issues. It will be vital that she gets the help she needs to overcome this."