|Summer of the Dragon|
Date: 1979 — $6.29 — Book
D.J. Abbott, a graduate student in archæology, knows it's too good to be true. An all-expenses-paid summer trip to Arizona to do some archæology for an insanely rich benefactor, with palatial accomodations, good food, and even a clothing allowance, and it falls into her lap? Of course, the insanely rich benefactor is well-known for believing all sorts of oddball things, and D.J. knows she won't be able to keep her mouth shut; she therefore decides to enjoy her presumably short stay before she gets kicked out on her ear.
But then someone, one of the many hangers-on this benefactor has acquired, slips some drugs into her tea. And Hunnicutt, the rich man, has an accident and then disappears. And D.J. still has no reason why she was hired, especially since Hunnicutt seems to take her skepticism in stride...
As with many Elizabeth Peters mysteries, you can tell almost immediately who the love interest is going to be, since he's the snarky one. You can also probably guess that the handsome guy is up to no good. It doesn't matter much, though, as the story is the part, not the ending, but there is certainly a trend.