A grandson killed his gradparents, who had life insurance policies. The question: can someone inherit from the person they killed?

A grandson, in a moment of violence, killed his grandparents. The grandparents had life insurance policies.
Can someone inherit from the person they killed?
In most jurisdictions, the "Slayer Rule" prevents a beneficiary from profiting from intentionally causing the insured's death. But implementation is rarely automatic.
Claims teams must coordinate with law enforcement, attorneys, and courts — often for months or years — before determining payout eligibility. Meanwhile, other family members may be waiting.
Some claims sit at the intersection of criminal law and contract law — and examiners must remain neutral arbiters of policy language even when the circumstances are emotionally charged.