Fiona Donnison |
Fiona Donnison, 45, suffocated Harry, three, and Elise, two, when she wrongly suspected her husband Paul had started an affair with an old school friend.
She then armed herself with two kitchen knives in an attempt to kill Paul, 48, and blame him for the death of their children, it was alleged.
But Paul did not return to the family home that night. The next day, she handed herself in to police saying she had killed her children.