Lissa Haynes, 61, and her husband Dr. David Haynes were found dead in their San Diego home on November 28, 2014, the day after Thanksgiving. Lissa, born Lissa Danelle Reeves, worked as a nurse and was remembered for her optimism and love of animals. David was an emergency medicine physician. The couple left behind two children, Kimberly and Peter, and other relatives.

Investigators say their son, Peter Haynes, then 23, was arrested and charged in the killings. Authorities reported that Peter had severe mental health problems, including schizophrenia, and suffered a psychotic episode that night, made worse by drug use. Prosecutors said Peter shot his mother in the early morning and shot his father when he came downstairs; a 911 call from David seeking help for his wife was part of the record. Peter later pleaded guilty and received a sentence of 100 years to life.

If anyone knew Lissa or David, or has information about the familys struggles with mental illness that could shed light on the events leading up to that night, please share what is known.