The plot of 'Session 9' revolves around a group of five men who win the contract to remove asbestos from a disused mental hospital. With only a few days to complete their work the stakes and pressures are high, though as the week progresses each of the group begin to be affected by the place, and soon become conscious of another presence of some kind. 'Session 9' is a film that succeeds because it doesn't fall back on cheap gimmicks, special effects or shock moments, it instead provides an eerie, forbidding atmosphere and well rounded characters. Writer and director Brad Anderson allows each of the characters to develop as individuals and play off each other, so as a viewer you soon become interested in who they are. Anderson then cleverly allows the horror to grow out of the characters personalities, their creepy working environment and the discovery the of the mental hospitals grim history. The story unravels so impressively that despite a relatively slow start it soon hooks you in, and if you want a genuinely chilling, creepy and thought provoking horror film then 'Session 9' is well worth renting.