A dinner party from hell or what? We quickly learn that hosts "Sarah" (Shirley Henderson) and husband "Tom" (Alan Tudyk) are having to sell their luxury home else face repossession. For some reason that seemed like a good reason to invite long-term friends "Richard" (Rufus Sewell) and wife "Beth" (Olivia Williams) round for food. It's the latter who throws a real spanner in the works by inviting the eponymous "Jessica" (Indira Varma). Let's just say that the hostess and this guest get on like a house that's already burnt down, and as the vino flows (tiny measures in huge great glasses) things c...