Benjamin Barnwright is a recurring character and serial killer in the Netflix original series Mindhunter. He is played Joseph Cross.


Benjamin Barnwright is responsible for the murder of 22-year-old Beverly Jean Shaw, his would-be fiancé. Benjamin’s almost brother-in-law, Frank Janderman, and sister, Rose, are implicated in her murder, too. Though all three are responsible, law enforcement only prosecutes Benjamin.