"The Chaser"

"The Chaser" by John Collier is a story that deals with a man's dream of gaining a woman's
love through a potion. The man wants the love of this woman so badly that
he wants to purchase a potion to gain her love. The old wise man that
owns all these potions is a man who has experienced much about love in
his life. This woman to the young man is everything. He will go to all
limits to have her care about him. With this potion the old man says "She
will care intensely. You will be her sole interest in life." ...