Spiritual Forum

This sounds like books by Alan Kardec and Chico Xavier of the Spiritists.
https://www.youtube.com/watch?v=qKN5agBV39U
Journalist and filmmaker Rich Martini discussed his incredible journey finding evidence for the afterlife, life between lives, and "soul groups." He extensively interviewed Dr. Michael Newton, known for his pioneering work on life between lives. Newton put some 7,000 people under deep hypnosis over a 30-year period, and found a number of commonalities amongst his clients regarding reincarnation and the afterlife. For instance, he discovered that people had a specific color associated with them during their between-lives world that was related to their spiritual progression or age of their souls. Martini filmed a number of people's hypnotherapy sessions, including his own. One of the sessions was with a woman who experienced being a holocaust victim in a past life. During her between-lives state, she said she met with a Council of Elders, who surprisingly told her that "it was harder to play the role of a perpetrator than a victim."

According to Martini's research, while in the between-lives world, we conduct a planning session, often with members of our soul group, deciding who is going to play what role in the next lifetime. People typically have between 3 to 25 members in their soul group, and when they find each other, there is a sense that they are "home," he said. A commonality Martini found, is that when people are regressed they say their soul enters a new fetus at around the four months mark. Interestingly, only 1/3 of the person's soul goes into the body and the rest resides in the spiritual realm, and is only reunited at physical death, he continued.

He shared details of his own lengthy hypnotic regression, in which he experienced a previous life as an Indian Medicine Man, and attended a classroom about "energy reconstruction" during the between-lives state. For more, check out a trailer for his documentary, FlipSide. Martini also touched on his extensive research into the fate of Amelia Earhart. He interviewed a number of witnesses who saw her plane in a hangar in Saipan. He concluded that she was held prisoner by the Japanese (who probably thought she was a spy) from 1937-42, and was executed after United States shelled Saipan.