If the manner of death and staging made it obvious they were killed with anger and hatred, I would think police may have presumed right away that the couple were murdered. But we are led to believe there was something at the crimescene trying to be so convincing as to lead police instead in the direction of a murder/suicide determination (whether or not police actually fell for that). So therefore, if the killer(s) staged it to appear as M/S, it could very well have been purely financial (with a stick or two of mental illness thrown in). imo.As part of the motive, agreed, but given the manner of death and staging, anger and hatred toward both as well. This was not purely financial.