The Iowa Supreme Court has overturned an appeals court ruling that threw out the conviction of a Burlington man in his ex-wife's death.

The court ruled Friday that even if the trial court erred in refusing to let a physical therapist testify, the error was harmless in light of the "overwhelming evidence" of guilt.

Dennis Richards was convicted of murder and arson after authorities found Cyd Richards strangled to death in a burning house in 2009.

The appeals court reversed the conviction because the trial court excluded testimony from a physical therapist who would have suggested Richards wasn't strong enough to strangle his ex-wife. A new trial was ordered.

The attorney general's office sought the Supreme Court review.