A recent TLS has a knockout review by Frances Wilson of three new books about Frankenstein, a text now at its 200th birthday. Whole thing behind a paywall, but here’s the lead
Frankenstein’s metaphor

Our celebration of the birth of Frankenstein follows the baby shower held in June 2016 to commemorate the wet weekend two centuries earlier when Mary Shelley first conceived of her story. Another flurry of publications will doubtless appear five years hence, to cash in on the creature’s first stage appearance at the Lyceum Theatre on July 28, 1823, in a dramatization by Richard Brinsley Peake called Presumption; Or, The Fate of Frankenstein which ran for thirty-seven nights and inspired, over the next three years, fourteen further English or French plagiarisms (with names like Frank-in-steam; Or, The Modern Promise To Pay, and Humpgumption; Or, Dr Frankenstein and the Hobgoblin of Hoxton). The tone was set for Bride of Frankenstein, Son of Frankenstein, House of Frankenstein, The Rocky Horror Picture Show, Robocop, Blade Runner and The Fly. Frankenstein’s capacity to reproduce is seemingly endless; like aphids, he was born pregnant.
Project Gutenberg has the whole thing, but unclear which version (the original 1818, or the one, in Wilson’s words, the author ratted out on…)