As JK noted a few days ago, Dutch artist Mick Oosterveer died last weekend in a motorcycle accident at the age of 50. Oosterveer was well known in Europe for his daily strip Nicky Saxx, but he had also collaborated with Mark Waid on a number of comics for the U.S. market, including two four-issue series, The Unknown and The Unknown: The Devil Made Flesh, about a detective who has a brain tumor and only six months to live.
In honor of Oosterveer, BOOM! Studios has made both collected editions available for free via comiXology (click the links above to go to the download pages). If this is your first time on comiXology, you will have to create an account, but it's painless, and once you download the comics, you can read them on pretty much any device you own. Both comics also are available via the iPad app. There's no mention of how long they will be available for free.
BOOM! Editor-in-Chief Matt Gagnon has also penned a nice appreciation of Oosterveer.