Psychoville returns with a spooktacular hour-long Halloween special. Four tales of terror unfold as location manager Phil Walker investigates the abandoned ruins of Ravenhill Psychiatric hospital. Does the ghost of evil governess Edwina Kenchington still walk the empty corridors? What other horrors lie within these crumbling walls?

When strangers Jim, Eva, Emily and Mo meet William online in his new 'Chelsea Teens!' chatroom, they're completely seduced by his fast-talking, charismatic character. But beneath the surface lies a much darker truth. William is a dangerous loner, channeling all his energies into cyberspace. He's become an analyser, a calculating manipulator who finds it almost impossible to interact normally with others in the real world, instead turning his hand to manipulating people online.

Eccentric British painter J.M.W. Turner lives his last 25 years with gusto and secretly becomes involved with a seaside landlady, while his faithful housekeeper bears an unrequited love for him.