A Joker Story - "Definitive Therapy" was commissioned and paid for by DC Comics for an anthology called The Further Adventures of The Joker to tie in with the first Batman movie.

Twenty teens. Abducted. To play a game of man hunt.

For months Summer is trapped in a cellar with the man who took her - and three other girls: Rose, Poppy, and Violet. His perfect, pure flowers. His family. But flowers can't survive long cut off from the sun, and time is running out...