^Yup. There's no real reason for that novel to be called The Heart of the Warrior
, since it's not a Worf-centric novel at all. Clearly it was meant to be The Trojan Spaceship
. But it was the first fourth-season DS9 novel to be published, so the marketing people probably wanted to play up that Worf was part of the cast now, and thus they changed the title to something Klingon-ish and stuck a big Worf head on the cover.