I'm sure glad there was an eighth season of Magnum, p.i. There were some good episodes like this one, and the actress who portrayed Rita was quite good and had good chemistry with Tom Selleck.
Just a note of interest (for me at least): the restaurant where Joe, Rita and the mobster have dinner (One Horse Chez in the episode) today is called Murphy's Bar and Grill. I've eaten there several times over the years, and in fact had lunch there with some friends about a month ago. The street Magnum parks his Ferrari on while he listens to the bug Rita is wearing, is Merchant Street in downtown Honolulu. Behind him about a block you can see part of the Bank of Hawaii building, where I worked for about 17 years back in the 1990s and early 2000s. I used to walk down that street every day going to work and going home.
Also, on the DVD at 42:09, we clearly see the sign on the JH Schnack building, which was also shown in the 64th episode of Hawaii Five-O episode "Ten Thousand Diamonds and a Heart"
http://www.mjq.net/fiveo/5-0log3.htm and if you want to see what it looks like today, you can go to Google Maps and type in the address 922 Maunakea Street, Honolulu, Hawaii. Once you are there on Google Maps, just drag the picture up and you can see the same JH Schnack sign on the building as well as the "1916" sign (presumably indicating the date the building was constructed). You can also click on the image to go down Maunakea street (towards the ocean...well, into Honolulu Harbor) and to the left you can see Pier 14 (which was shown on the DVD at 40:43).
One last bit of trivia: On the DVD at 40:09, we can see a poster advertising the group Olomana, which was a popular Hawaiian musical group in the islands especially in the 1970s and 1980s. They play easy-listening, contemporary Hawaiian-style music and they are still actively performing to this day:
http://olomanamusic.com/