Conspiracy to Murder

The town of Midden is desperately run down and dilapidated, its poverty-stricken people mostly unemployed. but then a mysterious stranger arrives out of the blue. The stranger has fabulous wealth and promises that it can be used to revive the town's fortunes-but only if the citizens of Midden agree to a solemn pact; they must make the most awful promise to the stranger. What will they choose to do?