India, Aug. 18 -- Netflix has released the documentary Conversations with a Killer: The Charles Manson Tapes, a three-part docu-series featuring previously unreleased prison calls, archival footage, and firsthand accounts. The series revisits one of America's most notorious criminals.

The docuseries has prompted curiosity about his family and his biological children.

Manson, who died in prison in 2017 at age 83, was convicted for orchestrating the 1969 Tate-LaBianca murders carried out by members of the so-called Manson Family cult. The four sons who are thought to be his biological children have received significantly less attention than his misdeeds.

Here's all we know about his four biological sons:

Charles Manson Jr. was born on A...