Gods behaving badly

The twelve gods of Olympus are alive and well in the twenty-first century, but they are crammed together in a London townhouse--and none too happy about it. Even more disturbingly, their powers are waning ... [and] a minor squabble between Aphrodite and Apollo escalates into an epic battle of wills. Two perplexed humans, Alice and Neil, who are caught in the crossfire, must fear not only for their own lives, but for the survival of humankind. Nothing less than a true act of heroism is needed-but can these two decidedly ordinary people replicate the feats of the mythical heroes and save the world? --From publisher description