When 2 yachts are hijacked, Roberts sends Kate and Vernon to take care of the thieves before they strike again.
When a Senator is suspected of being "on the take", Kate has a bet with her partner on who is going to crack under the pressure first.
Kate poses as a diver as she attempts to retrieve a stolen Cellini Chalice. Along the way, she renews an old friendship and thinks of a way to out-smart the thieves.
Working undercover, Kate manages a bistro to investigate a liquor smuggling ring and to protect the witness who saw the last manager killed.