There are no reliable documents regarding the seclusion of the Ancients. Most theories are based on the relics found in the systems believed to have been colonized by them. Some of the discoveries possess qualities previously unknown in the Galactic Library, but there is no solid theory on who or what the Ancients were, nor where they disappeared to. Interestingly enough, folk tales of several different species allude to a similar, old, evil. Recent messages from various sectors report of multiple contacts with something described as "Ships unlike any known design, with an unsettling feeling of something hovering outside your field of vision" (Interceptor "Delirium of Disorder", Lambda Serpentis system, 43.393)