Director-actor Rob Reiner and his wife Michele were the two people found dead on Sunday at a Los Angeles home owned by Reiner, according to a law enforcement official.Investigators believe the couple suffered stab wounds and a family member is being questioned, the official said.The Los Angeles Fire Department says it responded to a medical aid request shortly after 3.30pm on Sunday and found a 78-year-old man and 68-year-old woman dead inside.