In the Courts of the Crimson KingsDownloadable Audiobook - 2008
<P>In the parallel world first introduced in S.M. Stirling₂s <i>The Sky People</I>, aliens terraformed Mars (and Venus) 200 million years ago, seeding them with life-forms from Earth. Humans didn₂t suspect this until the twentieth century, but when the first probes landed on our sister worlds and found life---intelligent life, at that---things changed with a vengeance ...
Publisher: [Old Saybrook, Conn.] : Tantor Media, 2008