I just finished a Jack McDevitt book, "Echo". It's the first one I've read by him and it was good enough that I've ordered a couple more. It was a lot of detective work set in a "future" setting on earth with space ships etc. but nothing weird or too out there. Here's the blurb:
During eight thousand years of star travel, humans have encountered only one alien species, Sunset Tuttle spent a lifetime looking for others in vain.
Twenty-five years after Tuttle's death, Alex Benedict makes an astonishing discovery: a stone tablet inscribed with cryptic symbols, now in the possession of Tuttle's onetime lover Rachel Bannister. Benedict is determined to decipher its secret - one Bannister doesn't want revealed. Could it be that Tuttle's obsessive quest was successful? If so, why is the woman hiding the truth? Stranger still, why did Tuttle never admit to his findings?
Now Benedict and his assistant, Chase Kolpath, embark on their own voyage of discovery - for answers as startling as they are infinitely dangerous.