Rodney Alcala: ’20/20′ episode explores how ‘Dating Game’ serial killer was linked to 8 murders

An upcoming episode of “20/20” will analyze how detectives linked “Dating Game” serial killer Rodney Alcala to eight murders in the 1970s. Scheduled to air on Friday, the “20/20” episode will detail how Alcala’s arrest for Robin Samsoe’s July 1979 …