Spacejack is the first of three YA novels by Terrance Dicks under the Star Quest umbrella. The novels feature three cousins Anna from Sweden, Jan from America and Kevin from England. The other books in the series are Roboworld (see review here) and Terrorsaur.
The three protagonists of the novel are familiar archetypes; the aggressive American Jan, the conservative intellectual from England Kevin and the demur Swede Anna. The novel is straightforward space opera with the three cousins getting involved with two warring alien factions at Stonehenge. Jan and Kevin get abducted by the evil Kaldor race while Anna is with the benevolent League of Sentient Life Forms. Dicks’ fast paced prose style brings them together at the conclusion of the novel. A time jump strands the kids leaving them in space for the next two novels. If you like Dicks’ Target Doctor Who novelizations you will like this 7 out of 10.