Hanna Marcos, 80, died on September 24, 2010, after a violent home invasion at her Hawthorne, California residence. The attacker, 62-year-old John Wesley Ewell, broke into her home with the intent to rob. During the assault he choked and struck Marcos; her death was ruled a heart attack brought on by the physical trauma of the attack.

The killing was part of a series of violent residential robberies in the area. In the weeks after Marcos’s death, the same assailant attacked and killed other residents in Los Angeles County. He was later apprehended after being captured on video using a victim’s ATM card and was charged in connection with multiple murders and residential robberies.

What information might help connect Hanna Marcos to investigators or others who knew her routines and contacts before September 24, 2010?