After Rick delivers an address to TM at the guest house, TM goes to check out the address. When he pulls up to the building there is a sign that reads Jan Kona Real Estate. Jan Kona was the character played by Jill St.John in "Three Minus Two".
Could Magnum's expression when he sees the sign be due to the fact that he remembers the name? Has Ms. Kona branched out from the fashion industry to the Real Estate business?
The location where Sir Cedric Brooke is having his meeting when Eric DeForrest shows up with the rifle is none other than Omega Station. The building that was Lazeronics in "J. Digger Doyle", from which TM (along with Digger), rescued Higgins by carrying him up the Haiku Stairs on his back.
Omega Station is now an abandoned, yet highly interesting structure that features reinforced concrete walls 6 feet thick, and roofs 9 feet thick. The building was also used in the filming if the television series "Lost". http://www.lostvirtualtour.com/lost/filming_locations/omegastation/index.html
After killing Eric, Magnum is trying to find a ride back to the estate to stop Sally from killing Sir Cedric. Why does he need to hitch a ride when he followed Eric to the location in the Ferrari?
Magnum once again incorrectly picks a lock. You cannot pick a lock using only a pick. You also need a tension wrench, which is a small, flat piece of spring steel that is bent at a 90 degree angle. The tension wrench holds the tumbler pins that you've already picked in place while you pick the rest, and to turn the cylinder once the lock is picked. This is done incorrectly through out the series.