Plot summary
Alice's dashing former high school boyfriend, Mark Millard ( Stephen Dunne ), shows up at the Brady doorstep wanting to rekindle their romance. However, Mark makes a shady financial offer, and Carol and Mike have Mike's friend from the district attorney's office check Mark out, and it turns out that Mark just wanted Alice's money, as he's pulled this on several other women. When Mike and Carol start to confront Mark, he tries to escape, but hits his head on a frozen leg of lamb, that Sam the Butcher was stopping by to deliver. In the subplot, the boys and Mike are building a model airplane.
Credits
Adapted from Wikipedia contributors, List of The Brady Bunch episodes. HTML formatting and reference markers removed.