The release mostly collected P.R.O.B.E. Case File shorts which had already been available, either for free on YouTube or for download on the BBV website. First Entry and Kelpie were the only two shorts exclusive to this release, slotting in before all the other Case Files in the in-universe chronology. They became available as individual downloads after the announcement of Volume 2.
A narrative trailer for the release was released on the BBV YouTube channel.