Trading brains is a dangerous game
Though it's plain, when exchanged, there's acclaim
But the sad old recipient
Finds madness incipient
Goes insane, quite deranged. It's a shame.
Boris Karloff and Anne Gwynne in Black Friday (Arthur Lubin; 1940). Karloff''s character transplants the brain of a gangster into a bookish college professor. Writer Curt Siodmak would revisit this theme again in his novels Donovan's Brain and Hauser's Memory, as well as several screenplays.