Encouraged by his daughter to try something new, widower Charles Nieuwendyk answers an ad from a private eye seeking a mole at a retirement community

Charles charms his fellow residents at happy hour while finding his footing as a sleuth. But will a mysterious warning end the case before it even begins?

Charles has some explaining to do when Emily unexpectedly arrives in town — and another missing item lands him in Elliott's cranky crosshairs

Pacific View's group activities give Charles the perfect opportunity to narrow down his list of suspects, but his chumminess raises concerns for Julie

While Julie uses a lavish gift as bait, Charles tries to connect with Gladys. Virginia encourages Florence to splurge on something she's always wanted

As the Pacific View community reels from a sudden loss, Charles goes on an emotional journey with Emily. Didi weighs an intriguing offer from corporate

On a tour of San Francisco's historic sites, Charles and Calbert bond while talking about the past, present and future. Didi and Julie lock horns

When the pieces click into place, Charles faces the difficult task of revealing his true purpose at Pacific View. Emily helps him unpack the past