The novel “In the Garden of Iden” by Kage Baker was published for the first time in 1997. It’s the first novel in the Company series.

Dr. Zeus, Inc., also known simply as the Company, has discovered the secret of immortality. For its long-term tests, it developed time travel and this has allowed it to accumulate enormous wealth going into the past to save lost artworks but also extinct animals and plants. The immortals that are created make rescue operations on behalf of the Company in various periods.