The plot is awesome, and very intriguing. Again, I thought the Vietnam flashbacks were captivatingly woven into the episode and Tom Selleck (as usual) does an outstanding acting job! Also, I know that producer Michael Mann is famously known for having very abrupt/sometimes "hanging"/definite in-your-face type endings to "Miami Vice" episodes. But, there are a few "Magnums" that do that as well...and Bellisario and Larson were doing that 4 years before "MV". I liked the abrupt but heart-felt ending to this with Magnum and T.C. mentioning the effects of their Vietnam experiences. Something you usually don't see at the time.
But, my favorite part about this episode is that it's obviously Donald Bellisario and Glen Larson's own take on the classic 1944 film noir movie "Laura"!
In "Laura" a beautiful rich socialite, named Laura, is brutally murdered by a shotgun blast to the face...therefore she is not identifiable by the face--in 1944 there was no DNA and I don't know if they looked at dental charts then or not? Anyway, the cop that has to solve the murder is captivated by who Laura was and as he investigates her life, he ends up falling in love with her. Then, she suddenly shows back up alive!

Another popular cop-show that did it's own version of "Laura" too, was the 90's cop-drama "Silk Stalkings"--starring Rob Estes and Mitzi Kapture.