In this episode, the net finally closes in on murderer Herbert Mullin. But with body parts still being discovered, Dr Michelle Ward details how elation turns to despair as law enforcement realize there must be a second serial killer operating in Santa Cruz.   Watch full episodes of Mind of a Monster on discovery+: discoveryplus.com/mindofamonster *discovery+ is currently only available for US subscribers. Hosted on Acast. See acast.com/privacy for more information.