Jeffrey Deaver's "The Blue Nowhere" is brilliant, a psychological thriller about hackers.
Antony Swofford's "Exit A" is a crime fiction book set in Japan about American teenagers.
and Natsuo Kirino's "Real World" is the story of a teenage boy who kills his mother and goes on the run - not really a thriller, but pretty psychological.
These are three of my favourite modern books, and the last two are shorter if you find it hard to delve headfirst into larger stories.