It's 1610 and Jacobean London is full of dangers, from the plague to plots and revolutions. For William Shakespeare, life has taken an unexpected turn: one that will transform his writing. Haunted by a familiar spirit, he is urged to include more and more paranormal events and characters in his work. Meanwhile, Ned Lambert, a young player in Shakespeare's company, The King's Men, is having inexplicable experiences of his own, with a beautiful and elusive woman in green who is not of this world. Now a man on and off stage, Ned is caught between fears and temptations. The poet is his friend, as is the popular young Prince of Wales, but is the mysterious woman he sees friend or foe?