I read this book solely because of it's Lost connection. I did enjoy the tv show tie-ins. The mystery was interesting, just not the greatest mystery I've ever read.
LOST addicts might enjoy this...it is a fairly standard private eye offering...nothing terribly surprising, but more entertaining than I expected, given that it was written as a TV show prop, of sorts.
If you're a die-hard Lost fan, read the book...you'll find a lot of sublying themes that deepen the Lost "world". Purgatory, the infamous "twin" theory, father/son relations are all familiar topics from the Lost forums and are played out in the book. Other than references to the Widmores and Hanso, I don't think there are any shocking revelations that adds to the main Lost story. Rather, the book adds to the mystique of the Lost mythology. The writing seemed inconsistant, and often times rushed (especially near the end). Casual readers may want to pass this on, but is a must read for fans.
As long as you don't go into reading BAD TWIN thinking you're going to solve the mysteries of the hit television show Lost, then you should be okay. BAD TWIN, on its own, is an intriguing mystery featuring twin brothers--one a bigwig in the family business, the other a ne're-do-well who has gone missing.
Oh, sure, there are a few references in the actual storyline to make you go "hmmm"--the philosopher John Locke, a trip to Australia aboard an Oceanic flight, the totally hyped numbers showing up as the twin's birthday, and the family name of Widmore. But besides those few basic tidbits, this book won't tell you squat. It really has nothing to do with Lost.
On its own merits, though, it's an engaging mystery that I read in one day, and if Gary Troup was an actual person (which he isn't), and had actually written anything else besides BAD TWIN (which he hasn't), I wouldn't hesitate to read it.
I enjoyed this tale but didn't enjoy the feeling of being ripped off once I realized the information about the author was a load and the story was linked to the tv series Lost. Oh well, so much for not being plugged into the tv age.