Shaun Evans as John Sweeney in "Until I Kill You," and Jessica Gunning as Martha Scott in "Baby Reindeer."ITVX/Netflix"Until I Kill You" is about Delia Balmer, who survived a relationship with serial killer John Sweeney.The four-part drama is based on Balmer's book about her ordeal."Until I Kill You" shares a link with Netflix's "Baby Reindeer:" they both involve the same London pub.True crime dramas "Until I Kill You" and the Netflix megahit "Baby Reindeer" share a surprising connection: they both involve the same London pub."Until I Kill You" is about Delia Balmer (Anna Maxwell Martin), a nurse, who survived being attacked by her ex-boyfriend, John Sweeney (Shaun Evans), a serial killer dubbed the "Scalp Hunter."The four-part drama, released on the weekend by British network ITV, starts with the pair meeting in a pub and ends with Balmer testifying against Sweeney in court several years later.