The meaning of the title "The Chaser" is very simple, although the term "chaser" may not be as commonly used as it was when John Collier wrote his story. A chaser is a drink that is taken to follow the first alcoholic drink. The chaser may be alcoholic or non-alcoholic. For example, a person might drink a straight shot of whiskey and follow it immediately with a small glass of water to dilute the whiskey already in his stomach. One common combination at bars is a shot of straight whiskey followed by a small glass of beer. The chaser in Collier's story is a poisoned drink intended to kill the woman who is suffocating the hero with too much love and possessiveness. The original drink was the love potion he bought to make her fall in love with him. The word "chaser" in this story has nothing to do with chasing anybody or being chased; it is another euphemism for the deadly poison the hero will probably be using to kill his wife.
One of the questions sure to be asked is: "What is Collier's attitude towards love and marriage?" (He is very cynical, perhaps because of his own personal experience. He wrote several other stories about men killing their wives.)
Also: "Why is the chaser so much more expensive than the original love potion?"
Why is the love potion so cheap? (Because the old man knows the buyer will want the chaser eventually, and he can make his profit at that time.)
What is a chaser? (I have explained this above.)
Discuss the character of alan