When renegade starships begin wreaking destruction across the quadrant, Captain Jean-Luc Picard and the crew of the U.S.S. Enterprise are shocked to discover that the mastermind behind this sudden threat is none other than Picard’s protégé and friend: Admiral William T. Riker. The newly minted admiral is on board the U.S.S. Aventine as part of a special assignment, even as the mystery deepens behind his involvement in the growing crisis.

There's mystery and adventure — and it's written for both the newcomer to Star Trek fiction and to the seasoned veteran. You can find it at your local bookseller and at these outlets:
I have finally gotten online the production notes and trivia for Star Trek Titan: Absent Enemies online here, so you can check those out after you've read that. (You can obtain that novella here.)
Also, I missed the chance to make a post on it last week when it came out, but my Conan story has been reprinted in Robert E. Howard's Savage Sword Vol. 2 from Dark Horse. I'll add notes on that one to the site when time allows.