Former 'All That' cast member Kyle Sullivan says dialogue coach Brian Peck was pen pals with the notorious "Killer Clown" Globe ... infamous serial killer John Wayne Gacy that he flaunted in ...

A police source tells PEOPLE Sebastian idolized infamous serial killer John Wayne Gacy ... his front porch. Gacy, who had performed at children’s parties as “Pogo the Clown,” was convicted ...

As the official premise published by the streaming service indicates, “ John Wayne Gacy was a budding politician, a well-loved contractor in his community and even worked as a clown occasionally.