This week on Killer History, Lauren sits you in the chair and painstakingly details the ridiculous life of Glennon Engleman, a deranged dentist hellbent on getting rich off life insurance fraud. You can bring your own laughing gas, but you won't need it because this episode is absolutely bananas. Haley rounds out the episode by educating you about Sarah Rosetta Wakeman, who was the Civil War champion of "Don't ask, don't tell."