Magnum is hired by a bank teller from Robin Master's bank to investigate her father, world-famous counterfeiter Herbie ""Rembrandt"" Norton, who has recently been released from penitentiary and whom she suspects has returned to counterfeiting after coming into large amounts of money since his release. Before starting investigations, the pair go to retrieve a book for Higgins from a safe deposit box at the bank, but the woman accidentally locks them in the vault, and with the time-release door and a slowly dwindling air supply, the pair are trapped inside... Meanwhile, spurred on by getting the potentially lucrative case, Thomas had promised to take Rick and T.C. for a luxurious weekend away, but unaware that Magnum is trapped in the vault at the bank, they are annoyed to presume that he has gone without them, and - with T.C. having problems with his girl-friend - they decide to hold a party at Magnum's guest house - which does not go down well with Higgins, who is holding a meditation we

While Higgins is arranging a television variety show to raise money to save an endangered species of worms no less, Magnum is hired by a woman who claims to have psychic abilities and believes to have foreseen her own murder. Thomas must find who, if anyone, the will-be murderer is, but the woman's visions of fate spell great danger for Thomas too. Meanwhile, Thomas is trying to get his payment from a used car salesman who hired him to find out if his was cheating on him, but events turn much more dangerous than he expects...

After Agatha and her friends are swindled out of $100,000 by a shady investment company, she hires Thomas to track down the crooks and retrieve their money; Higgins's distant cousin arrives 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, giving Higgins and Agatha only a few days to play Pygmalion and turn his common cousin into a proper lady before the wedding.