Marvel Entertainment and ABC Studios will release a new original graphic novel based on the Castle TV series, Castle: Unholy Storm will release on May 6th.
This fourth adaptation of the Derrick Storm novels will be written by Cullen Bunn (Fearless Defenders, Venom) with interior art by Robert Atkins (Amazing Spider-Man) and Will Sliney (Fearless Defenders), and cover art by Carlo Pagulayan (Iron Man, Hulk).  The 112-page hardcover will follow Derrick Storm as he races to find the killer of the daughters of four high-powered international businessmen with the help of Clara Strike, his CIA handler.
The third Castle adaptation, Castle:  A Calm Before Storm, was released as a miniseries last December (see "Marvel Plans 'Castle' Miniseries") and collected into graphic novel format in July.