Friends say Marcia Forsberg, a cancer survivor, seemed devoted to her husband, Richard, a computer manager. Both are 61.
But in February, reports "Early Show" national correspondent Hattie Kauffman, Marcia suddenly disappeared.
"He would bring her dinner every night and she would greet him," neighbor Susan Contoff told CBS News, "and, the last four-to-six months, we haven't seen her."
When neighbors in the Southern California community of Rancho Santa Margarita asked Richard about his wife, says Kauffman, at first he told them allergies kept her inside. Later, he said she was on a trip.
"He said, 'Oh she's visiting her friend in Arizona," neighbor Judy Quinn told CBS News. "Well, that date came and she never came back."
Then, says Kauffman, he claimed their marriage had failed and the two were separated. But when friends couldn't reach Marcia on her cell phone, they asked neighbors to question Richard again.
"Point-blank questions, like, 'Where is she at? Can we hear her voice?' recalled neighbor David Petrisevac.
Finally, six months after Marcia disappeared, neighbors called police. Forsberg told them he hadn't seen his wife since March. But he'd never filed a missing persons report. In fact, adds Kauffman, police learned Marcia hadn't used her cell phone or credit cards all this time.
" They returned to re-interview him, and he was gone," says Jim Amormino of the Orange County Sheriff's Department.
Gone the next day, with his wife's car, Kauffman says. Investigators broke into the couple's home searching for clues, and now they've named Richard Forsberg a "person of interest" in the case.