Sarah, haunted by the lullaby of the killer who took her friend Emily, delves into Emily's past, suspecting the reclusive artist Alistair. Venturing into his studio filled with eerie sculptures, she confronts him, demanding to know where Emily is hidden. Alistair reveals he embodies the park's darkness, but a child's laughter distracts him, giving Sarah a chance to escape with Emily's talisman. Beneath the old oak, Sarah finds a spark of defiance to continue the fight against the secrets of Thornbury Park.