The Galapagos Affair takes pains to create a sense of this nascent - and strained - community including a self-styled Baroness who pitches up intending to build a holiday resort on the island. Archival photographs, footage, and maps provide the visual inspiration as a slew of stars (among them Cate Blanchett and Diane Kruger) read extracts from compellingly conflicted accounts. Tension is cleverly created through the knowledge of impending foul play, but never being entirely sure who will suffer some terrible fate. That tautness dissipates, however, thanks to the curious decision to interview the modern day locals. The dastardly acts occur in what constitutes the documentary's third act, meaning that the opening two thirds are given over to scene setting to a large degree. Motives are spun and characters sketched, but one can't help but feel that it aces far longer than your average locked-room investigation for the likes of Hercule Poirot.