No trilogy would be complete without the third movie of the set…
Last Crusade was originally supposed to be a prequel, like Temple of Doom, but was scrapped given that this was supposed to be the final one. This one shows us what shaped certain characteristics and how much like his Dad he is, despite all efforts. More importantly, it shows us that not all dreams are meant to be obtained and that we need to be happy with the journey that the quest provides.
While the weakest of the three movies, Last Crusade definitely holds up to multiple viewings.
My advice: watch it and enjoy the antics of the Jones boys…