TMDb/Should I Marry A Murderer TV Discover the shocking true story of Dr. Caroline Muirhead, who learns her fiancé is a convicted murderer-and chooses to stay. Premieres April 29 on Netflix. April 30, 2026 AceShowbiz - The upcoming Netflix docuseries Should I Marry a Murderer? dives deep into an unsettling true crime story involving love, murder, and difficult choices. Set to premiere on Wednesday, April 29, this three-part documentary presents the real-life account of Dr. Caroline Muirhead, a forensic pathologist who learns that her fiancé, Alexander McKellar, is a convicted murderer.