Gibb's rule no. 69 - Never trust a woman who doesn't trust her man.
Ducky's full name is Donald Horatio Mallard.
Gibb's rule no. 51 - Sometimes you're wrong.
Ducky's mother's address is on Mccallum Drive. Ducky is played by David Mccallum.
Clyde Kusatsu, who plays Mr. Rin in this episode, had previously played Ben Franklin in the season seven episode The Inside Man.