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.

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.