Vancouver serial killer Charles Kembo will fight his conviction, his lawyer said.

A B.C. Supreme Court Jury found Kembo guilty on Friday on four counts of first-degree murder in the deaths of his wife, his step-daughter, a former girlfriend and a business partner.

Judge Sunni Stromberg-Stein sentenced Kembo to life in prison without eligibility for parole for 25 years, calling him a "predator." Crown prosecutor Henry Reiner said the convicted serial killer had a smile on his face shortly after hearing his verdict.

"He didn't seem to be too perturbed about the fact that he's going away for quite a while," Reiner said.

His defence lawyer Don Morrison insisted that Kembo took the situation seriously, and was a "very happy fellow."

The Crown argued Kembo had hatched an elaborate scam to profit from his victims.

The body of Kembo's wife, Margaret Kembo, was never found. The bodies of his 20-year-old daughter Rita Yeung and his ex-girlfriend Sui Yin Ma were discovered in Richmond, B.C. His business partner and friend Ardon Samuel was found strangled to death in a Vancouver park.

Morrison says his client will fight the verdict, but did not elaborate on the basis for the appeal. For now, Kembo, who has been incarcerated for the past five years, remains in custody.

With a report from CTV British Columbia's Maria Weisgarber