"Nobody mention Frankenstein. Nobody interfere. Nobody snog Byron." Should be easy right?

The Doctor and gang arrive at the Villa Diodati, Lake Geneva, in 1816 - on a night that inspired Mary Shelley’s Frankenstein. The plan is to spend the evening soaking up the atmos in the presence of some literary greats - but the ghosts are all too real. And the Doctor is forced into a decision of earth-shattering proportions…