Mars has always held a fascination for science fiction writers, but with a recent slew of books on the subject is there anything new to do with the Red Planet? Paul McAuley (what happened to the 'J'?) has hit on a great central idea for The Secret of Life by inverting H.G. Wells' War of the Worlds - instead of the Martian being infected by a human virus, here the Martians themselves are the virus that accidentally infects Earth's biosphere. While the idea is good however, the execution is a little hit and miss.
The novel starts well, in classic hard-sf style, as biologist Mariella Anders learns about the Martian 'oilslicks' spreading throughout the world's oceans, and prepares to fly to mars to identify the source of the infection and find a cure. While the traditional weaknesses of hard-sf are apparent - pages of scientific jargon that the author expects all the readers to be instantly familiar with (in this instance I doubt that anyone without at least an A-level in biology will understand the more technical passages) and the preference of intellectual ideas over emotional content leading to a rather dry textbook feel at times - the central mystery is strong enough to keep the reader hooked.
Unfortunately once Mariella obtains a sample of the Martian lifeform things go downhill as the novel steers firmly into techno-thriller territory. Following an unconvincing D.I.Y. Earth re-entry after stealing a Chinese spacecraft, Mariella spends the last third of the novel on the run from the various shady characters with a vested interest in the Martian biotechnology.
There's some good arguments made regarding big business co-opting of science, but ultimately the momentum of the novel is lost as we go into sub-James Bond territory (stopping off for some unnecessary continuity ties with McAuleys' novel Fairyland), while the various inhabitants of McAuley's 'invisible country' seem over-familiar from previous novels.
Crucially, apart from one section where a Chinese expedition gets accidentally infected, there's no sense of threat from the Martian lifeform itself, with no sign of the 'claustrophobic tension of Alien' promised by the cover blurb. For all that this Martian biology may overrun the Earth itself the threat remains an abstract intellectual one, and a real missed opportunity when compared to Ian McDonald's similar alien threat in Chaga.
The Secret of Life contains some great ideas, but as a novel this is a rather dry intellectual exercise, lacking in drama or emotion. An interesting read, but not a particularly enjoyable one.