Charming scoundrel

Play around with character. Create a charming villain, one that is most cunning, intelligent and handsome, but evil nonetheless. Whether he be murderer, wife beater, robber or some other character, make him as irresistible as you can, with the exception of his one evil habit. Now write a descriptive scene of him doing his worst.

This is from the Writing Sparks creative writing prompts at Once Written.