Just in time for Halloween, the Thomas Fisher Rare Book Library in Toronto has opened De Monstris, an exhibition exploring the long cultural tradition of frightening monsters that inflamed imaginations and triggered irrational fears throughout history. De Monstris examines scary illustrations and writings from ancient Greece through the early 20th century. The exhibition features both infamous and obscure imaginary creatures, such as unicorns, sea serpents, mermaids, dragons, basilisks, and human animal hybrids. The show, which runs until December 21, 2018, includes writings about monstrous creatures from Aristotle to Mary Shelley, and Pliny the Elder to Robert Louis Stevenson.