Saw this at the flix at the weekend so thought I'd pop a review on here for the benefit of any considering the DVD when it's released. I'd rent it if you have the option as (imo) it won't stand a second viewing, not in a negative sense, just that once you know what's happened you probably won't need to see it again.
This is a good story, & starts with a wealthy, happy, couple on holiday in Greece, that hire a travel guide to show them round a bit, before they find themselves embroiled in a very unsavoury situation. It's well acted, as you'd expect from the cast, & filmed along the lines of a Hitchcock-esque style movie that gives a good sense & feel of the 1960's when it's set. I haven't read the book so can't make a comparison unfortunately, but the film works well.
It's very tense,& gets darker, certainly for the last hour, & the ending was very satisfactory I felt.
Great cinematography, making good use of the beautiful med-setting & the characters unravel throughout the course of the movie, with some surprises in store.