The Devil's Elixirs by E. T. A. Hoffmann
The charismatic monk Medardus becomes implicated in a deadly mystery against his will. As he travels towards Rome he wrestles with the enigma of his own identity while pursued by his murderous doppelganger. The monk's only hope for salvation lies with the beautiful Aurelie; but in order to escape the curse which lies over his family, he must evade the sinister powers of the living and the dead. In this lively and disturbing gothic tale, Hoffmann combines elements of the fantastic and the sublime to analyse the seductive ambiguities of art and the deeply divided nature of the human imagination.