After being left in charge of Charlie at 8.45am, our case was that he lost his temper within that crucial twenty minutes preceding his emergency call, before throwing Charlie with sufficient violence to cause catastrophic head injuries.".
Ahead of the sentencing, prosecutor Nicholas Lumley KC told jurors: "The prosecution say Christopher Stockton - and nobody else - is responsible for Charlie's death.
Little 22-month-old Charlie Roberts was shaken so hard his brain moved in his skull and killed him, but his vile stepfather Christopher Stockton alleged it was down to a Hobnob biscuit.
Stockton, who met Charlie on his first birthday, told the court: "It was a learning curve, I didn't really know how to look after him properly, but we started to build a bond.".
During the sentencing, Dominic Tate of CPS North East said: "It is clear from the evidence in this case Christopher Stockton murdered Charlie Roberts.