I struggled for about the first 100 pages of The Girl Who Kicked the Hornet's Nest by Stieg Larsson. I was expecting the fire and drama of the first two from the series, but felt bogged down by a lot of mob talk and cop talk that didn't interest me. After I made it through those pages though, I was rewarded with an exciting conclusion to the series.
P.S. This counts as my Book Set in a Country Starting with the Letter S (Sweden) for the Eclectic Reader Challenge.