Hook 3: Star City by Tully Zetford

Hook 3
Star City 
By Tully Zetford (Kenneth Bulmer)
1974 New English Library

Hook loses his payment for a job, tries to steal it back in what may be a Parker tribute, then saves a child and hangs around a rich woman. We don't reach an actual storyline until the short novel is almost over.

Hook is invited to a hunting party where the rich mow down primitive humanoids for sport. Hook takes the natives' side and organizes a defense, culminating in an unexpected, though unlikely, conclusion.

Other installments had a GTA feel of running from danger to danger. This felt like he just kept typing, hoping an idea would come, and it never really did.

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