The Shield creator Shawn Ryan has signed on to adapt Tom Clancy's 1993 best-seller Without Remorse for Paramount Pictures, reports Vulture.

Alex Kurtzman and Roberto Orci are said to produce.

The book Without Remorse follows one of Tom Clancy's recurring characters, John Kelly (who later assumes the alias of John Clark), as he seeks revenge against the Baltimore drug ring responsible for the death of his girlfriend. While the book is set in the 1970s during the Vietnam War, insiders say there is no definitive plan to make the film a "period" piece.

No production date has been set.