1. The novel is not consistent with the series. Characters wear blast suits to travel in time (as seen on the cover of "The Scavenger"), for instance. Also, somehow, this story features the "first" introduction of Logan and Claire, but it takes place on Dec. 31, 2007, *after* the TV series where they were paired takes place. Continuity's something that can be fudged by saying "oh, things changed somehow," but still, stuff like that would be a no-brainer for consistency, wouldn't it?
2. As such, Claire has virtually no role in the story. The historian side more closely resembles the original pilot for the show (aired 5th, called "Rocket Science"), with Amy Fuller and Bob O'Donnelly paired with Easter, rather than Claire.
3. The novel's timing also isn't consistent with Parkinson's own immediate follow-up, "The Scavenger," as that novel references events in this one, but is dated, again, earlier in 2007 than the ending of Viper's Spawn, which is on 12-31-07.
If you can get past those glaring inconsistencies, it's a fun read.