Betty Windom, a writer friend of Robin's stays at the Estate and soon involves herself in Magnum's insurance investigation of a hit-and-run, leading to her incorporation of Magnum and the case into her story.

After Agatha and her friends are swindled out of $10,000 by a shady investment company, she hires Magnum to track down the crooks and retrieve their money. Meanwhile, Higgins's distant cousin arrives from England to marry the heir of a local socialite and turns out to be a punk rocker in need of a drastic makeover before she can be accepted into society.