Isabella Rain-Ayala died Dec. 18, 2005, and an autopsy confirmed the death was caused by a blunt-force abdominal injury.
David Sunshine admitted during a police sting he punched the girl numerous times leading up to her death and admitted to burning the girl with a lighter.
But at trial, he argued the death was unintentional and was caused by an accident that occurred during a game involving mattresses.
He was convicted of second-degree murder and sentenced to life imprisonment with no chance of parole for 15 years.
B.C. Appeal Court Justice Elizabeth Bennett says instructions to the jury on circumstantial evidence were adequate, the judge's review of the evidence was fair and balanced.
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