I started to read this novel at a normal pace not noticing that, surreptitiously, it was becoming for me a "page-turner."
The structure is not as complex as some make it out to be: it's a missing person's case that turns into a murder mystery and ends as an action thriller, all of it overlayed by the conceit of having the main character develop amnesia (for credible reasons) well into the initial, missing person's phase of the tale. The story would have been there without the protagonist's malady; the malady adds spice to the read.
Mr. Abrahams handles the narrative with lucidity and aplomb. Contrivances of the genre are never heavy handed, even an almost obvious "red herring" causes anxiety though one would feel awfully cheated were it to be true and therefore one knows it could not possibly be... Mr. Abrahams demands that readers remember; his is not the short-chapter, cliff-hanger, serial-style writing of the "da Vinci Code" but rather a well-crafted, cannily developed novel where most characters and relationships are fleshed-out and reveal themselves as the plot advances and the protagonist recovers memories. Only towards the end, when the murder-mystery turns into action-thriller does the story perilously come close to getting "hokey." Somehow it survives.
The writing is always mature, intelligent and engaging.
This is an amusing read; I enjoyed it very much. I recommend it particularly if you can give it good chunks of time, such as by a lake, on a long plane ride, or at the beach. Summer is here.
To answer somebody's query: my star ratings are based on comparisons within the same genre(more or less) and mean nothing about my estimation of a book such as Mr. Abraham's as compared to say, Mann's "Magic Mountain" or Weinberg's "A World at Arms." All three are very fine writers in widely different spheres, the spheres themselves susceptible to different estimation.